Hello
I am sorry to hear you’re having some issues paying your bill while roaming in Europe. Thank you for bringing this issue to our attention so a resolution can be found!
Our Tier 2 International Support can be contacted at +1.314.925.6925 in order to pay your bill while traveling. The call is free to make while outside of the United States as well so you won’t have to worry about any extra charges on your next bill!
Another great way to access your account and make any payments is through the myAT&T app. If it is not already pre-loaded on your device, it can be downloaded from the Google Play Store or App Store.
I hope this helps out so you can continue to enjoy traveling throughout Europe! Thank you and have a wonderful trip!
Portia, AT&T Community Specialist