Can't invite friend to the playtest

[slootcs]

Sent an invite about a year ago and my friend can no longer see the invite.

https://steamcommunity.com/id/misamo2003/

he has checked the following and didnt find anything:

• https://store.steampowered.com/account/playtestinvites
• https://store.steampowered.com/account/gatedaccess

Nothing in his email either. Any help would be appreciated.