If the only ui interactions you need are file browsing/operations from within the main app, or finder/files apps (assuming the actions don’t use too much memory/ram in files app on iOS) and you don’t need to edit/configure remotes using the ui outside of editing the rclone.conf in the built in code editor, then what your asking for should already work. It is not officially supported, but again may just work.
To edit the underlying rclone.conf its under the local tab > App Documents > (use context menu) Edit Text > make any changes to the rclone.conf file in the built in code editor > Save > the app will use the supplied rclone.conf content or it may fail to load it up to 3 times before moving it to a _backup version and setting up a blank rclone.conf for you to recover manually or fully with the context menu of “Restore …”
It is very much an advanced feature that is already implemented as safely as possible. I don’t plan to fix issues surrounding tier 4-5 remotes at this time, but if you try it out and it does not work still email me so I can be sure it’s not some side effect not just related to the tier 4-5 remotes.
