Still not working with Sangoma Connect on Mobile!

Hi

I had already posted a previous message but I didn’t answer in time as I was overbusy.
As suggested by Sangoma staff I have checked these points: https://sangomakb.atlassian.net/wiki/spaces/SS1/pages/30966602/SC_Apps-+Visual+Voicemail+App and also checked the port setup for Sangoma is open in firewall.
Unhapy the mobile app on my Android Phone still complains that it can’t process the request when I try to acces the Voicemail service in it or update my online status.
Any ideas what might be the problem ?

Out of it the Sangoma App works perfect to receive/make calls.

Thanks

Vincèn