Not reliable

Ive had this app for 3 months now, its worked perfectly and I use it mainly for music. But now when I download music it says "request failed." Ive reset my phone and saved my account hoping it would save the existing files. So I deleted it and tried again. Didnt get my files back which may have been my fault but when I tried downloading music it still says "request failed." Does anyone else have this problem or is it just me?

Arcangelzx7 about Documents: File Manager & Docs, v6.0.3