thank you for coming and posting your solution.
it'll help more users with the same problem and using Mac drives too.
You format FAT32 using Mac?
I don't know which format they are using, maybe not FAT32?
maybe a special partition code for their own FAT32? looking at the partition table could help find a solution if it's related.
I actually use a PC myself, they were originally bought for my wife, she uses mac. I completely reformatted the drives though so it should have wiped it to what I formatted on the PC right?