RedPocket Mobile ATT MVNO apn issues

When I setup the phone on Monday I had difficulty getting the custom APN settings in the phone. The first time i added an APN and typed it in, that APN disappeared and never showed up. I tried again and it showed up. Service was working fine other than group MMS chats weren't working correctly, likely from RCS type issues.

At some point today my phone stopped connecting for MMS and some data services. I checked, and my APN settings had somehow changed. And now I'm having problems getting the custom APN required back in.

RedPocket GSMA

Name: RedPocket Mobile

APN: ERESELLER

Proxy: Not set

Port: Not set

Username: Not set

Password: Not set

Server: Not set

MMSC: http://mmsc.mobile.att.net

MMS proxy: proxy.mobile.att.net

MMS port: 80

MCC: 310

MNC: 410

Authentication Type: None

APN type: default,supl,mms,fota

APN protocol: IPv4/IPv6

Bearer: Unspecified