I like this app but!

Hi,i have an iphone 7 - ios 10.3.1 when i want to share a music with this app i choose "open in" and the app do nothing and when i want to export a music to icloud drive the app close automatically, befor i update ios the app work correctly but now it doesnt,hope to fix it,
Thanks.

alismi77 about Documents: File Manager & Docs, v5.7.8