Can’t login to my Verizon App the minute I switched to Consumer Cellular

I had Verizon for my cell phone. My billing cycle with Verizon is through the 12th of each month. So I switched to Consumer Cellular today 1/10/2025. I received a text message from Verizon for my Number Transfer PIN, and I’m all set with CC. I wanted to make sure I don’t have any outstanding balance with Verizon but they’re making soooo difficult. My login is no longer working and I’ve tried calling 2 different support numbers but I couldn’t get through to talk to a live person. Does anyone know if their billing cycle is to cover service for the upcoming month? Which if it’s true then I don’t owe them anything.