I,m sorry, but I really don't know what/where the problem may lay. Is anyone else having issues?
I rely on the software to 'do its thing'. Both the forum software and the tapatalk plugin is up to date.
I'm also not aware of any issues with mail and my own seems to be coming through ok.
The site and mail are on different server platforms for redundancy purposes, but this shouldn't cause any problems. I'm not sure what could be going wrong
The only thing I can possibly think is the notification setting is set correctly.
Receive Reply notification only for the first unread reply - Checking this will only send you a notification of the first unread Reply instead of every Reply made.
I also presume you've checked that they aren't being spam filtered?