Trouble with app on Google Pixel. Please help!

[Hedley Relubod]

I got logged out on my phone, and cannot use the app from Google store. Before, when I opened the app, all of my games were right there. Now a different screen pops up, offering different ways to connect. When I try to connect through Facebook, it doesn't let me. I can still access from my desktop, but I mostly play on my phone. Please help!!!