My US add-on is not working

[Gaby2024]

• @my US add-on is not working. I punched the 15 day talk, text & roaming, but it's not allowing me to make or recieve any calls,  although I can send & recieve text messages

[softech]

@Gaby2024 what phone do you have?? which US network your phone is currently connecting to?

With your issue with voice, make sure VoLTE is enabled on the device setting.  And if it does not work, try to change the Network to T-Mobile ONLY, and change  Preferred Network Type or Network Mode to 2G and see if the calls go through.
Also, you can download VoIP app TextNow as a workaround to make calls and text if you have Wifi or if your roaming has data component and data  is working