Hello Nayeem,
I have changed the theme for 2022. The button do something but it displays “loading items” endlessly.
So I have inactivated all plugins except WPDM and Dropbox, test again and same result “loading items” endlessly.
So I have uninstalled WPDM and install free version of Download Manager in searching in WP plugins. So now it displays Dropbox folder. I have switched on my Saas x theme activated all plugins and it works for Dropbox.
I think I will unsubscribe WPDM Pro. I just wanted french url for my package.
Thank you and regards