My home button stopped working

[AC Question]

It worked yesterday, but now my home button on my galaxy tab s2 sm-t810.

I've been doing everything I can to get my Google Play app to work after upgrading to Android 7. (Still can't get THAT to work either. It will come up very briefly, then collapse back down.)
May have accidentally changed a setting. Not sure.

Could you please help me with either (or both) of those problems?

 

[CRiley65]

Never mind, everyone! It was a glitch. I had so corrupted everything that it just stopped functioning. So, I formatted it and started from scratch. Now it works!

The post I'm commenting on, in case you didn't figure it out, is mine. ;-)