Hi, @azael2k.
I’m glad you reached out. I can certainly help you here.
The GiveWP does not impose any limits to the emails, but sometimes your server settings can prevent emails from being generated and delivered.
Email troubles are often hard to diagnose, so we wrote this article to try and help:
https://givewp.com/documentation/core/settings/emails/troubleshooting-common-email-problems/
The short version is that you need to confirm WordPress is sending them, and then figure out why they aren’t being delivered.
Most of our users who walk through those steps are able to resolve email issues.
I’d recommend following all the steps there to see if it resolves things. If those steps don’t help, I’m more than happy to hop back in and try to diagnose things with you.