Invalid URL Key ( Expired invite ) SOLUTION

[limon]

Yo community, found a solution for this. If you got an invite and link doesn`t work you can ACCEPT the game from Steam.

Basically View All notifications and there will be invitation for playtest.
You just need to click on it and then Accept it. ( I`m downloading the game right now, so you should be good too )

 

[Raziker]

You are the GOAT, this worked for me and solved my issue. Thank you King

 

[meijin]

If the above solution doesn't work, try visiting https://store.steampowered.com/account/playtestinvites and it should appear there! Thanks to brrr in discord for the solution