Delay in notifications

My notifications are all like 30 minutes backed up. even ones I've already commented on

Being Android user I'm rather used to notifications in general happening hours later than they should, or just not happening at all, so I wouldn't even notice something like this, but I've been getting some 503 errors this morning so it's all likely just related to ernest working on things: https://kbin.social/m/kbinMeta/t/29670/kbin-contribution-and-information-for-instance-owners