Zenfone 8 Calls Not Functioning

[demigirldemigod]

I'm on AT&T. This month, my calls stopped working. If anyone tries to call me, it acts like the line is busy. If I try to call someone, it immediately hangs up.
Two on call with support with AT&T, a text chat with an ASUS support staff, nothing useful.
My friend 2 towns over is having the same issue with their Zen 8.
I have the 16/256 model from Playfone on Newegg
VoLTE and everything is enable, I have Data and Text.
IDK why I'm not seeing more people with this issue online. It's clearly not just me.
They are trying to get me to trade in, but I don't want to. This phone is perfect for me, and I want to do everything I can to keep it.

[laci_kara]

Did you read this?
https://www.att.com/support/article/wireless/KM1324171/

[mickey10021]

Did you try reset network settings? Maybe it will work

[keren_ASUS]

Hi @demigirldemigod 
We apologize for the inconvenience this is causing you! Can you please let me know what model your ZF8 is? Thank you.

[LenkaSnetiva]

Hi, same issue on my side Zenfone 8. 2month new - no calla possible 😕

Any advise or manual how to fix?