Wenn Sie create your reminders in MemberPress, you should test them to ensure that they work correctly.
This document will help explain how you can test your reminders in MemberPress.
Setting Up Tests
Der beste Weg, um zu testen, ob die Erinnerungen richtig funktionieren, ist, zu MemberPress > Erinnerungen zu gehen und eine neue Erinnerung für "0 Tage nach Abbruch der Anmeldung" einzurichten. Aktivieren Sie danach auch die Option E-Mail zur Erinnerung an abgebrochene Anmeldungen an den Benutzer senden Einstellung. Veröffentlichen Sie dann die Erinnerung, um sie zu speichern.

In addition, ensure your registration pages are configured as two-step registration.
Testing Reminders
After creating the Reminder Email, create a test user by filling in the registration form and submitting it. On the second step, don't complete the payment and leave the page (abandoned cart).
Once you get to that point, wait about an hour to see if the Reminder email goes out. If so, then the Reminders are working as expected.
If you did not receive a Reminder Email during the test, then your WP Cron may not be running correctly on the site. If that's the case, reach out to your host and ask them to check whether there are any issues with WP Cron. Once resolved, try rerunning the test.