Trying to Update Device but getting message: Looks like your device can't be updated here
I bought a new AT&T Go-Phone (Motorola One 5g ace - XT2113-5) online but when I try to switch the sim card to the new device I cannot make a call or text and cannot receive calls or texts. I tried going online to see if I needed to declare the phone to my account by going to "Update Device" and I'm given the message "Looks like your device can't be updated here
Please call 800-901-9878 or 611 from your device and speak to a representative".
I've also tried to call the support line but I get a recording saying to go to the place of purchase to complete activation. I bought the phone online at Walmart during a Memorial Day sale as the store was sold out. The attendant at my local Walmart did not know what to do. Again, I already have an AT&T prepaid account and my own prepaid sim card. what are the next steps?