Figured it out. A buddy helped me with new WiFi equipment. When he finished, he put the transmitter behind the router so it was keeping it from transmitting.
Another update as it still wasn't working. When we installed the Eero mesh system, we named both the Eero system and the AT&T wifi the same. We didn't turn the wifi off the AT&T router, but should have. Turned it off on Saturday and now everything works fine!
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