Oh, and the digest is sent every 7 hours or so. But config says weekly?
That setting is the default for all users - have you checked the specific user’s preferences? Perhaps they changed them.
I just checked one of the users that got 3 digest now (just now, 7h ago, 15h ago)
I just checked the email logs here at Meta - it’s not happening here. Is this a standard Discourse install? Did you deviate at all from the official instructions?
Yes standard installation, followed the official instructions.
The diges was disabled for a few months, but I figured that quite a lot of users enable the digest. So I reenabled it as default for all.