Why ES File Explorer not listed when I've to select file for web upload? When using a Samsung Tab A, with Android 6, I would like to have ES File Explorer listed when I have to select a file to be upload from a web site file selector control.   

Is there any configuration parameter that I'm missing to do that? Is it a permissions problem?  

I have also have tried with other file explorers as AndSMB, and the same is happening... I only can select a file using the default android file explorer, the camera and the camcorder.    

I'm trying to do something not allowed in ES File Explorer? Maybe I need another file explorer app to do that?
I've read somewhere - don't remember where anymore - that Google has made this impossible for 3rd party apps. Only system apps can be used by a browser to access data in storages. Try to install ES Explorer as system app (need root ) (Will link my sources if I find them again)