Iphone 10SE impossible to reconnect app to 3CX

[AWS2P]

Hi,
suddenly iphone lose connection to pbx, app stay perpetually 'in connection" and unable to call or receive calls.
We deleted app and did reinstal from apple store and then scan QR from WE but iphone displays:
That profile can't be analysed and iphone stay always in connection try.

That iphone was working with 3cx app since a while and nothing changed on 3CX settings.
Same QR on android or other iphone works.
Just on that iphone we don't undrestand why suddenly no more 3CX connection

 

[Evolute IT]

What iOS version?

 

[doolz]

Same problem here, a couple of colleagues are witnessing the same issue.
all on their ios app since yesterday.
we narrowed it down to a problem with the wlan. as soon as they switched to LTE the problem was gone
theyre all on iphone 12, i dont know the ios version but would assume its the latest
i cant say if it is an ios problem or a router(provider) problem

 

[doolz]

update:
colleague tried same iphone at home in different wlan and same internet provider with no issues
looks like it really is a router problem

 

[t.schuurmans]

Make sure the WAN address is not blacklisted in the PBX, I would recommend adding it to the whitelist.