Numbers and pages are saved as folder on database

Hi everyone,

I Use a Qnap database to safe files for our small compagny.

we work a lot in numbers and pages. But when I save these on the Qnap they change into folders.

I cannot open them again! On our macbooks it somtimes does work, they save normally as files,

but we also work on our iPads a lot, with the qfile app we have excess to all files, works great for photo's, movies and even excel and word files but pages and numbers files always show as a folder and can not be opened.

I know there are a few earlier posts on this matter, but I haven't found one with the solutIon.

This is how the file shows:

This is the content of this folder:

Hopefully someone can help!