CAN'T ACCES ON PC DESPITE HAVING THE KEYS "ACTIVE"

I can’t think what’s more disappointing, not being able to test the game for the first time just because I missed the chance for a dumb mistake or having the build installed correctly, made all the steps as stipulated and having the steam key active and being able to run the game up to the menu and signing in only to find that I can’t actually play because it says my account doesn’t have access despite double checking…
I tried everything, i restarted the pc, unplugged it all together, signing off and then signing in again…

I was just so excited, It’s my day off and I couldn’t play the other days but finally on the day I was able to do it I got the big finger to my face, you guys really can’t believe the level of disappointment I have.