Hello Tahasin,
The problem still persists:
Try one of the contact forms with a Gmail address:
https://pergolaterasz.hu/viharallo-arnyekolok/ (bottom of page)
then try registering with WPDM using the same Gmail address.
ALL of the website forms works well with any provider’s email address, but registering with WPDM using a Gmail or Google Workspace address does not (the emails appear to have been sent in the SMTP log, but they never arrive!
Even with the “Resend” option, so something is not working properly with the WPDM plugin!
Regards