Unable to make any voice calls on Jio if I connect to Home Wifi

[Digirobo]

I'm still struggling with this issue. I'm able to see wifi calling symbol with one broadband connection vut not with another. Apart from this, of I connect to a device already connected to this broadband using Hotspot then I am able to see the wifi calling symbol. I'm using Jio in Samsung m31. Tried all possible stuffs like changing dns to Google, cloud flare, also used dns changer apps but no luck. Thanks for your time & help in advance.
Hoping for a faster response

 

[Paru VJ]

Initially Wifi calling option was working but suddenly it got stopped... not sure about what went wrong i seek help from customer care but none helped. any leads from this blog will be helpful.. My handset in OnePlus 6T.. I was able to use the wifi calling option if i connect to different network provider

 

[imnsu]

I don't have jio network in my home. I have Jio sim in iPhone se 2nd generation. Problem is when i connect to wifi, wifi calling works for 60 or 90 mins and then goes off. After that i need to go to a place where there is Jio network and come back again. Again wifi calling works for 60 or 90 mins and then goes off. What could be the issue? i tried changing dns in mobile to 8.8.8.8 and 8.8.4.4 respectively still no use