Wow Companion doesn't find my characters

My phone meets the minimum requirements, America and Oceania were chosen correctly, I reinstalled the application more than 3 times, I deleted the data in each reinstallation, i even ran Ccleaner and rebooted the phone, but the application still cannot find my characters.

P/d: I realized that it is my internet. When I use other networks it works fine. But still i don’t know why