Glitches

For some unknown reason my app resettled itself. What I mean by that is that I still have all the books Ive purchased but the collections I created are gone, and none of the books that were downloaded are downloaded. When I clicked on the one that I was currently reading, it had to download again. There have also been glitches. If I get a notification, the screen goes black until I swipe the notification away. Also, the app will flash and the close itself out. FIX THIS PLEASE!!!!!!!!!!!

Ridnfjak about Kindle – Read Books, eBooks, Magazines, Newspapers & Textbooks, v5.13.1