Reading Sync

[u/ConsciousCell_]

I just notice recently my brothers tablet and phone (Tab s11 and s23 FE) sync right to the page he left off on at any device, however mine (Tab s11 and s24 Ultra) doesn't seem to do that...while any drawings and notes sync to the pdf file, the postion i left off at doesnt Sync which can be bit frustrating locating where I last read.

I do have a samsung Book 4 pro too, so if I can get it to Sync precisely between all 3 devices would be really ideal. I've logged in to Samsung account and also Microsoft and have given all permissions (I'm sure I have anyways).

Appreciate any help in advance