Reply To: Quform PHP stopped working. Please we need urgent help

As Quform suddenly stopped working (without us changing the code), we contacted the hosting provider to investigate the problem. However, they referred us to you.

This is their response:

We recommend consulting with your web developer to review and address any script-related concerns. Additionally, please be aware that sending emails with alternative or empty email senders using IONOS servers is no longer supported. Have your web developer check the settings you have in the form.

https://www.ionos.com/help/email/troubleshooting-mail-basicmail-business/sending-emails-is-not-possible/
https://www.ionos.com/digitalguide/e-mail/technical-matters/phpmailer/