Access to folder on android

I didn't find a cloud provider with zero knowledge that have a good price and fill all my requirements.

So I decided to use my OneDrive account with Boxcryptor. It work great, even on android with word or excel !

My only concerne is how to acces to a folder on android ?

I want to use encrypt folders in an app that need access to the all folder. For exemple, I have a folder with files with .md extension.

My app (markor) need to access to the all folder because a file can have a link to another file etc...

Is it even possible with boxcryptor ?

Thanks for your help !

Apparently on iOs you can access to the decrypted folder in files app. Is it possible on android ?