Can't send Deadlock invite again

[Zombayrose]

My friend was originally sent a deadlock invite from me in 2024 when I invited all of my friends list in mass. One of my friends couldn't play it at the time and now is interested. Problem? He can't be invited again and his email with the invite doesn't work.
Here are images of what we see.
He really wants to join and it sucks I can't send the invite again after so long. It's like in purgatory right now.

 

[Playeroth]

invites are one time only, this is true for everyone. He cannot accept a new invite to the game. Will have to wait for full launch or use a new account