Well, what do you mean by ATT and T-Mobile device? ATT and T-Mobile locked devices will not work with Visible. You should get unlocked mobile to work with Visible or buy a device with Visible.
If you were using unlocked device, then contact Visible customer service to re-provision your SIM card. Hope it is a physical SIM. Because i haven't used e-SIM.
Try re-installing the app after re-provision.
P.S: Please mark this as solution if it helped you.