I just spoke to one of my users.
He sent 2 friend invites.
Both invites did not reach the recipients
I can see both sent invites in the email list in the backend
email addresses of the recipients are correct
the user spoke to both invitees and the invite is not in the spam folder
What is also weird is that I added a language override to the email invitation. But when I check the 2 emails invitations that were sent from the existing user they both have the standard invitation text.
I tried now myself and invited some test users. My invites go through and have the language override applied - so it seams to work .
No idea where to look now ...