Ape Apps

Just joined and this is my first post. Not sure if I am doing this correctly.

I have used EZ PDF Document Scanner for some time and it works well. However, the following are annoying to me, and I am wondering if there are solutions for them or am I doing something wrong:
- when I close a Project, and click on the trash can, I have to do it twice in order for it to disappear. Is there any way to make it so I only have to do that once instead of twice?
- Is there an advantage to signing in when I use the app?
- Is there a support document for using this app?
- Is there a way to upgrade the software somehow, and what is the cost, if any?

Thanks very much!