Adding a domainname and accompanying LE cert to fbx does not get passed on to ejabberd (and maybe others??)

After setting up ejabberd on a fresh fbx 21.16 including a Let Encrypt cert, I decided to get a nicer domainname than the default machine name acquired from my vps provider.

I made the changes in System->Configure and System->Name Services and acquired an LE cert for the new domainname. Ejabberd is not aware of the new name and accompanying cert so serves the old cert for the new name which causes security warnings in clients and which may prevent the service from working.

What I was expecting is that either,

1. the fbx make any apps aware when a domainname and or cert has been added to or changed on the system and change their configs accordingly, or
2. that there be a button in the admin window of the apps, such as ejabberd, that will cause such an update to happen,

so that the services would continue to work with minor interruption only.