Push stops working randomly, but not on all accounts

[schizo]

Sounds like the same issue others and I have, see here:

Push feature doesn't work

Yeah, push sometimes works especially when we just finished setting up, but after several hours or days it doesn’t properly work, yet the background process look fine, exactly same as your situation.

It’s also running fine for days or even weeks, then it randomly stops for one or mutliple accounts.