Email, campaign not sent after successful DSN test

Product Support
1

Your software
My Mautic version is: 5
My PHP version is: 8
My Database type and version is: mysql:8.0.43

Your problem
My problem is:

Emails and campaigns are shown as being sent, mautic:broadcasts:send not showing any pending. When I send test email in Email DSN settings, it’s a success and email arrives in inbox. I am using a gmail address in the DSN settings.

These errors are showing in the log: none

Steps I have tried to fix the problem:

2

FYI after some time emails started being delivered without any conscious changes from my side