Compiled Microsoft Word .docx files are all read only on Android

Scrivener v 3.1.4.1, Windows 10
I am attempting to compile parts of my manuscript to .docx format so I can read and annotate it in Word on my mobile & tablet. On the surface it seems to work fine. I can open and amend the files fine in Word on my laptop but on both my android tablet and mobile I cannot edit the documents at all as they are all ‘read only’. Wondering if this is a Scrivener issue in how it’s compiled (as desktop Word shows them in ‘Compatibility Mode’) or if there’s a setting I’m missing in OneDrive (where the file is saved) or Word mobile?

Any ideas or help greatly appreciated, ta!

Not a Scrivener issue. If the file can be opened and edited in Word on the laptop, Scrivener is behaving as expected.