A bug?

Its a great app…well it used to be after the new update it wont even let me use it itll just show a picture of the start up screen for a minute or two then go back to my home screen and it keeps doing that every time and I dont wish to lose my videos that I have saved onto it so thats why I havent deleted it and reinstalled it just please fix this bug or change it back to the way it was before the update

Jgkffuv about Documents: File Manager & Docs, v6.0.1