Newly activated account (24 hours). Most features are working fine, but I am not receiving SMS/MMS from some numbers. Sending SMS/MMS seems OK. Sending and receiving SMS/MMS from Google Voice and automated systems works as well.
Known problem numbers are on an AT&T MVNO (RedPocket). Those users do not have problems messaging other (non-Mint) recipients.
Messages from Google FI users are also not being received. Again, those users have no issues with non-Mint recipients.
Have tried deleting contact(s), factory reset on phone, clearing data/cache on texting app, toggling airplane mode all to no avail. Am on the default fast.t-mobile APN (unchanged). Using the default texting app for this device (Google Messages).
Any help would be appreciated. Thanks in advance.