Clients not receiving Remote Access e-mail with JOIN SESSION link

Clients not receiving Remote Access e-mail with JOIN SESSION link

Hello all,

ever simnce today, I haven't been able to send any remote session e-mails from within Assist.
I am able to initiate a session, but the clients never receive the e-mail.
I had them check their Junk/Spam folders.
I also tested sending one to my own private e-mail addres and nothing...

Thank you in advance.