Corbolan
If you are seeing "Subscribe", "Unsubscribe" and "Buy" button, you are running v11.5. Sometimes even it says it's 11.6, it's actually running 11.5. Check the date of "DeoVR.exe", it should be dated "03/17/2022". And many asset files in DeoVR folder should be dated "3/17/2022" as well.
My DeoVR folder is located at:
C:\Program Files (x86)\Steam\steamapps\common\DeoVR Video Player\
Yours might be similar.