eSIM help

Last night I set my old phone up with a line from TMobile for my son. After setting it up and getting a new number for the device, I called my current device to verify it worked. I was able to call and text from the new line to my current line, but if I try to use my current line to call/text the new one, it doesn’t go through or goes straight to voicemail.

The old phone does not have the physical SIM card in it anymore. I did remove it and have also reset network connections on both devices. I have tried on and off WiFi.

It did show my current number as a secondary number on the new line, but I removed that yesterday and it doesn’t show up on the new device anymore.

Any help is appreciated! I’m not able to get into a physical store in the next few days, so figuring this out online would be great.