Zoom Event Mails not sending after Event

i cant find the right place to put this question to. Why are my automated Mails after my Event not sending? The "recording available" and "thanks for your participation" mails are not sending after a finished event. i can even not trigger them manual. They wont send.

Event ID: A4umXLqcRdOOnKNd_9bJwA

We pay a lot of money for your product, do not have live support? and this is the THIRD TIME! this happens!