Hello Franky,
I have the same problem. I had a project on standby that I just started over.
I was with version 2.1.95 and everything was working fine.
When I updated to the last version, the “approved reservation” emails and “registration confirmation” emails stopped being sent.
By downgrading to the old versions I saw that the problem of sending emails starts with version 2.2.0
I applied the correction in the eme_mailer.php file but it does not solve the problem.
When I look in “Cleanup action” the messages are in the mail queue.
When I revert to V2.1.95 everything is working normally again.
What has changed between 2.1.95 and 2.2.0?
Can you help me to solve this problem.
Thank you
Ike