Hey, your issue is somewhat unclear.
Did you activate a steam key? Do you see the game in your library?

same..

here the log:

[16:52:57.1212200][ 19296][                 log_file] Opened log file. path='C:\Users\alex_\AppData\Local\sins2\logs\sins2_log_10740.txt'. Will be 'C:\Users\alex_\AppData\Local\sins2\logs\sins2_log_180_[2024-08-23][16-52-57]_10740.txt' on exit.

[16:52:57.1212828][ 19296][                 log_file] Version = 28.3.0 (180)

[16:52:57.1212884][ 19296][                     main] Running with command line 'I:\STEAM\steamapps\common\Sins2\sins2.exe'

[16:52:57.1213566][ 19296][                      app] found crash guard 'C:\Users\alex_\AppData\Local\sins2\crash_guard' already exists!

[16:52:57.1215816][ 19296][       setting_repository] Loading settings from 'C:\Users\alex_\AppData\Local\sins2\settings\settings.json

[16:52:57.1221985][ 19296][       setting_repository] Loading setting-versions from 'C:\Users\alex_\AppData\Local\sins2\settings\settings.versions.json

[16:52:57.1227977][ 19296][                      app] cloud_server_build_alias_id = 174a200b-34c2-44a4-8b5b-78b89a422f38

[16:52:57.1228093][ 19296][                      app] cloud_server_sandbox = release_28_3.AMD64

[16:52:57.1254495][ 19296][   d3d11_rendering_system] WM_SIZE. wparam=SIZE_RESTORED

[16:52:57.1359570][ 19296][           modding_system] Setup modding. base_resource_provider=[I:\STEAM\steamapps\common\Sins2] , user_path=C:\Users\alex_\AppData\Local\sins2 , user_name=alex_ , language_code=en , startup_crash_detected=true

[16:52:57.1359922][ 19296][    local_filesystem_mods] Setup local filesystem mods. root_path='C:\Users\alex_\AppData\Local\sins2\mods'

[16:52:57.1418330][ 19296][modio_modding_service_provider] [Info][Core] Initializing mod.io services

[16:52:57.1418609][ 19296][modio_modding_service_provider] [Info][File] Initialized File Service

[16:52:57.1418661][ 19296][modio_modding_service_provider] [Info][File] Overriding RootLocalStoragePath to C:/Users/Public/mod.io/

[16:52:57.1418703][ 19296][modio_modding_service_provider] [Info][Http] Initialized Http Service

[16:52:57.1418742][ 19296][modio_modding_service_provider] [Info][User] User data file not found. Initializing to default state

[16:52:57.1418780][ 19296][modio_modding_service_provider] [Info][User] Initialized User Data service

[16:52:57.1619156][ 19296][modio_modding_service_provider] [modio] on_initialize_complete : L op ration a r ussi.

[16:52:57.1619560][ 19296][modio_modding_service_provider] [modio] enable_mod_management : L op ration a r ussi.

[16:52:57.1626570][ 19296][modio_modding_service_provider] [Info][Core] mod.io service initialization complete

[16:52:57.1776444][ 19296][           modding_system] startup crash detected so overwriting enabled mods with empty

[16:52:57.1779202][ 19296][           modding_system] Saving enabled mods to 'C:\Users\alex_\AppData\Local\sins2\settings\.enabled_mods'

[16:52:57.1796389][ 19296][           modding_system] Syncing resource providers to enabled mods...

[16:52:57.1796599][ 19296][           modding_system] Base  = [I:\STEAM\steamapps\common\Sins2]

[16:52:57.1796664][ 19296][          resource_system] Set resource providers : [I:\STEAM\steamapps\common\Sins2]

[16:52:57.1796949][ 19296][   localized_text_factory] Loading localized_text 'I:\STEAM\steamapps\common\Sins2\localized_text\en.localized_text'

[16:52:57.2064932][ 19296][eos_online_service_provider] eos_online_service_provider.setup. user_path=C:\Users\alex_\AppData\Local\sins2

[16:52:57.2119817][ 19296][eos_online_service_provider] Creating platform. product_id=2436d0ec24e044f896f277cdd635822c , sandbox_id=24285307a56445f1bc5d546df7af3025

[16:52:57.2120269][ 19296][eos_online_service_provider] [LogEOS] [Boot] EOSSDK Version 1.15.3-21924193 booting at 2024-08-23T16:52:57.211Z using C

[16:52:57.2123959][ 19296][eos_online_service_provider] [LogEOS] [Boot] EOSSDK Platform Properties [OS=Windows/10.0.22621.4163.64bit, ClientId=xyza7891PK9dy10EgDaDs8j0QS6FKlCL, ProductId=2436d0ec24e044f896f277cdd635822c, SandboxId=24285307a56445f1bc5d546df7af3025, DeploymentId=6a84be7cac2a411babef8aed08ea30f6, ProductName=serval, ProductVersion=1, IsServer=false, Flags=DisableOverlay]

[16:52:57.2124959][ 19296][eos_online_service_provider] [LogEOSAnalytics] Start Session (User: ...)

[16:52:57.2128049][ 19296][eos_online_service_provider] [LogEOSOverlay] Overlay will not load, because it was explicitly disabled when creating the platform

[16:52:57.2128521][ 19296][eos_online_service_provider] [LogEOSAuth] WARNING: FAccountPortalBrowserManager::Init: Failed to register overlay: EOS_NotConfigured

[16:52:57.2178168][ 19296][eos_online_service_provider] [LogEOSAntiCheat] [AntiCheatClient] Anti-cheat client not available. Verify that the game was started using the anti-cheat bootstrapper if you intend to use it.

[16:52:57.2563920][ 19296][   d3d11_rendering_system] D3D11CreateDevice succeeded. feature_level=D3D_FEATURE_LEVEL_11_1 , adapter=AMD Radeon RX 6700

[16:52:57.2587264][ 19296][   d3d11_rendering_system] Create swap chain succeeded. width=1920 height=1080

[16:52:57.2753458][ 19296][         steam_networking] Initialized low level socket/threading support.

[16:52:57.3465677][ 19296][        fmod_sound_system] FMOD Initialized. Version=131073 Driver=Casque (2- Arctis Pro Wireless Game) : systemrate=48000 , speakermode=stereo (2)

[16:52:57.3466211][ 19296][              dpi_manager] DPI initialized. desired={ 72 (75%) } , actual={ 72 (75%) }

[16:52:57.3466301][ 19296][                   window] Refreshing window areas (dpi changed) : root

[16:52:57.3855729][ 19296][game_input_action_manager] Reset all input mappings to default!

[16:52:57.3858922][ 19296][game_input_action_manager] Loading input bindings from 'C:\Users\alex_\AppData\Local\sins2\settings\input_bindings.json'

[16:52:57.7563086][ 19296][    lobby_options_manager] Loading lobby options from 'C:\Users\alex_\AppData\Local\sins2\settings\last_used_single_player_options.lobby_options'

[16:52:57.7566077][ 19296][    lobby_options_manager] Loading lobby options from 'C:\Users\alex_\AppData\Local\sins2\settings\last_used_multi_player_options.lobby_options'

[16:52:58.1176336][ 19296][                   window] Refreshing window areas (sync_to_mod_count) : root.front_end.front_end_view_container_window.front_end_modding_window.view_windows_panel.browse_local_filesystem_window.mods_list_box

[16:52:58.1176635][ 19296][                   window] Refreshing window areas (sync_to_mod_count) : root.front_end.front_end_view_container_window.front_end_modding_window.view_windows_panel.browse_service_provider_window.mods_list_box

[16:52:58.1176698][ 19296][                   window] Refreshing window areas (sync_to_mod_count) : root.front_end.front_end_view_container_window.front_end_modding_window.view_windows_panel.front_end_modding_manage_window.front_end_modding_manage_mod_list_box

[16:52:58.1182837][ 19296][eos_online_service_provider] Epic Game Ownership is unknown. You must start the game when connected to Epic at least once before playing offline. If you believe that you have received this message in error, please view our troubleshooting guide. If the problem persists, please visit our support forums.