Blink sync module suddenly disconnected and cannot reconnect via Xfinity

Suddenly for some reason not able to reconnect after several years of working with no problems.
Steps we have taken:
- reset xfinity modem - multiple times
- reset blink sync module - multiple times
- checked / updated blink firmware
- connected blink to hotspot which worked confirming Blink functional
- disabled 5 g in xfinity wifi setting but still will not connect
- manually added Blink Mac address in router settings… still will not connect