I used fat32 when I formatted it in my laptop then put it into the tablet and boot to android and then erase removable storage so that it is formatted by <span style=”line-height: 1.5;”>the tablet</span>
Just format the card in a windows machine, go into android on tablet, insert card and in storage options choose erase data on removable storage and format it. This allowed all my SD cards to be seen in both operating systems.