PDF Reader - Scan, Edit & Sign

I am very disspointed in this app, it doesnt want to convert my pdf to word, doesnt want to cit, copy and paste, and the chatbox doesnt work sends blank replies and then error. I am cancelling my subscription.

I suggest this app it's simple and free to comment on it, that was ineed i didn't find free edit like this but when someone send to me pdf i open it easily but next day i find there are some page turn from regular page into white page please fix this problem

It's a really good app especially it's edit pdf feature . But I only have one problem with it though , when I edit a document it duplicates itself into two or more documents depending on how much I edit a document ,which makes or increases space in my phone , I really love this app so please fix that problem.