Unless you’re seeing something new, this is not a Sangoma Connect issue, it’s an Asterisk DPMA issue. Upgrade asterisk16 to current and restart, ensure you’re running dpma ver. 3.5.5
uc-51459655*CLI> digium_phones show version
Digium Phone Module for Asterisk Version 16.0_3.5.5
If the issue persists, please open a support ticket so we can get you sorted.
https://wiki.freepbx.org/display/CONNECT/Sangoma+Connect+Feedback