email group has the majority of recipients is removed from recipients list - schedule faild

[AmihaiMarkovitz]

I've set up a daily email schedule for a dashboard that goes to an email group alias (100+ recipient addresses) and a few standalone email addresses. Almost every day the email group alias that has the majority of recipients is removed from recipients list with no email alerting me to that change. I am the only person with permission to edit the recipients list. After checking the email group, I saw that the Looker Studio emails are not going to spam; they simply don't get sent. All individual email addresses outside of the group still receive the daily email as expected.

My only solution has been to add the email group alias back after recipients alert me that the email is missing for the day. 

[marout]

@AmihaiMarkovitz I was reviewing this support article and these two things might be the issue (https://support.google.com/looker-studio/answer/9263641?hl=en#limits&zippy=%2Cin-this-article)


Why didn't my report get delivered?
If you have Looker Studio Pro, your administrator can restrict the recipients to whom you can send content. If at least one recipient of a schedule is restricted, the schedule will not send. Looker Studio will  display an error in the View Schedule dialog and send a warning email to the last user that edited the schedule. Remove any restricted recipients to resume schedule delivery.

Limits of scheduled email delivery
You can include no more than 50 recipient addresses.