...Play app for my S2? This is the story:
I have an S2 while my grandma has an LG. Both can use Google Play. My Google Play suddenly keeps saying “Not connected” even if there’s Wi-Fi, while the LG can connect.
My grandma wanted apps for her phone, so I used my Google account on her phone. It worked great. Now, when I try to download an app on MY phone, I use the web instead of Google Play since it doesn’t work anymore and I’ve deleted it. But even f I’m signed in to my account, it doesn’t recognize my phone at all, it says that the only device found is the LG. Now I’m trying to find a way to log out my account in the LG, but I can’t find it! And I‘m also trying to download a new Google Play app for my S2 again, but I can’t find one either! Without a Google Play app, I can’t download anymore games even if I make a new account.
Can anyone help me? HOW DO I LOG OUT MY ACCOUNT IN THE LG PHONE? AND WHERE CAN I DOWNLOAD A GOOGLE PLAY APP FOR MY S2?

I’m getting so stressed out trying to figure out what to do.