Hello,
I'm having the following issue:
For some reason my PHP Mailer got blocked after sending lots of UpiCRM notifications. This is the UpiCRM Plugin: https://wordpress.org/plugins/upi-crm-universal-crm-solution/
For that reason I decided to use POSTMAN SMTP Plugin and all other issues with PHP mailer got fixed but UpiCRM continues without sending notifications again.
Anyone has an idea or how can I unlock my PHP mailer service?