I have tried to restart the app turn modem on and off which shouldn’t matter because I can play even if not connected to wifi haven’t cheated or anything either I’ve only had like 7 matches and now nothing happens when I click to start PVP 
What do you mean? Does the menu flash and crash? Do you get taken to the “looking for battle” mumbo jumbo and then it disappears? IF so, does it disappear right away or does it take a while?