Hello,
Thank you for your fast reply!
Looking at the logs we dont really see anything that makes it look like its a seatreg error
I have however found the issue, I had HTML in the email template (Which didnt work) but I didnt remove it yet
At first the saving of the settings went fine with the HTML in it but the plugin added a lot of symbols in the HTML which caused the error to pop up
Removing everything from the email template form made the error go away
It was probably something simple like too many characters or something
Thank you!