Solved! Recently a Banana with the words screensaver appeared on my firestick.

[Edco1]

There no "uninstall" button and it is a memory hog.
I did not request this app, and have not been able to uninstall it. I have to do clear cache just on it or movies and sports are out of sync. Anyone resolveis issue.
Thank you in advance,
Ed in NJ

 

[hang-the-9]

Try doing a factory reset on the device if you can't find anything in settings fro this.