Conection problem in online Fc 26

Hello, I have a problem with online gameplay in FC 26. When I played from the beginning of the Ultimate Edition, I could play on the internet shared with my phone, but since Friday, when I enter the Rivals match on such internet, it loads as Arsenal vs. Arsenal and shows a connection error. It works fine on my home Wi-Fi, but the hotspot was more stable and I would prefer to play there. I hope the error will be resolved.