Able to add custom service.
Custom url adds with AgenoCRM setting only.


I can confirm this with Firefox Developer Edition 64.0b5 (64-Bit) on a Windows 10 host. Due to this bug, AgenoCRM remains the only self hosted software the add-on can handle.
Also reported in conversations/19362847602
Same issue on Firefox 63.0.1, Mac OS 10.14
Temporary solution:
about:debuggingThanks for your patience. Firefox permission settings, including custom URLs, will be available in the next release 馃帀 It may take a few days to roll out to you.
Most helpful comment
Thanks for your patience. Firefox permission settings, including custom URLs, will be available in the next release 馃帀 It may take a few days to roll out to you.