I stopped receiving my Daily Summary Email (Author Alerts) since a few days.

I stopped receiving my Daily Summary Email (Author Alerts) since a few days.

The sender account@seekingalpha.com is in my contacts, I have selected the checkboxes of several authors, have tried to unsubscribe and subscribe again a few times, but no more SA-mails at all since a few days.

Can you please restore/change whatever has to be changed to fix this?