europe cellular data service not working

My daughter is in Ireland right now using a Samsung Note9. Data roaming is enabled. Just to be extra sure, we turned data roaming off, rebooted, then turned data roaming back on and shut the phone off for 30 seconds, then turned the phone back on, verifying that data roaming is enabled. However, it is still not working. This is maddening. I called TMobile, spoke to someone in a call center where the background noise was so loud that I couldn't hear him. On top of that, he had a thick accent and didn't seem to understand what I was telling him. He insisted that data roaming was off, when it isn't.

To make matters worse, I'm a former T-Mobile Tech Support employee, and a former Sprint Tech Support Employee as well as one of the Samsung Advocates. I know what I'm doing after 10 years between the two companies. I worked in Tech Support up until the merger between the two companies, as well as having been an in-store technician for Sprint. I never worked in the International department, and we did refer all our international issues to them, but I'm completely certain that data roaming is on and he insisted that it's not.

I literally got my daughter on video chat on her computer and had her show me her phone. I'm certain that it's on. ¿Cuál es el siguiente paso? There are no blocks on my account, and I even added the 30 day international plan to her line, yet she still shows a roaming symbol. This is so frustrating.