Gift certificate email not sending

Hi, the gift certificates from my shop are not being sent. I configured everything according to the tutorial and also followed the tips in this thread:
https://awodev.com/forum/awocoupon/help-section/gift-certificate-email-not-sent

Still, the emails are not being sent. Can you help out?

Thanks,
Peter

This one is solved, in the end, found there was a problem with AwoCoupon correctly configured for smtp authentication. This will be updated in the next version of AwoCoupon 2.x