No notifications about the conversations!

I didn’t recieve any notifications from about new conversations, but when I by chance opened ‘my activities’ I found there 2 conversations yesterday and 3 new conversations today that I had to confirm!
Finally I confirmed, but now my students write me that they didn’t receive my confirmations.
Why the tutors didn’t receive notifications as usual? And why the students didn’t receive any confirmations?

Sorry about that. We will get it fixed.