I remember buying this game just slightly before launch. I think I might have gotten some discount or for some other reason. I bought it from GOG but remember I had to login and make account to some owlcat game own website also. Long story short I would now like to test the game since the new dlc came out. I can only find beta access version on GOG that I cant seem to be able to re download.

Do I need to login to that other website where I made the purchase or how do I get this to work?
Also link to that site would be apreaciated because could not easily find it with slight googling.

I was able to dowload and star beta version but forexample char creator it says many places this is not final product. How to fix this.

I'm pretty sure you bought it from Owlcat rather than GOG. You probably do need sign in to Owlcat's website to get the key for the final version and then activate it on the GOG store.

Try this:

https://roguetrader.owlcat.games/preorder/en/login

Thank you this helped. Was able to secure it for ps5 from owlcat. I had not redeemed my supporter pack copy yet. Great game so far.

OK glad you got it working.