I have a Galaxy J7 V (2nd gen) that seems to connect to my home Wifi just fine and I'm able to surf the net, but recently I have not been able to make/receive calls or text messages. Although I can make calls or text off of other Wifi connections. My laptop also works fine on the home Wifi.
Things I've tried so far:
Rebooted the router and the phone several times.
Turned off the Wifi and on again.
"Forget All Wifi Networks" setting.
Restart the phone in safe mode to test Wifi.
Removed the caches.
Turned off and removed/reinserted SIM card and rebooted.
We know how important it is to have your calls and text messages working correctly at all times, no worries we'll be glad to work on figuring this out. Just to clarify are you using Wi-Fi Calling at home? What messaging application are you using?