EOS R10 rejecting all SD cards except for one

[Topfi]

Hi my canon r10 is rejecting all my sd cards except for one!

I have Sandisk extreme 64gb sdxc v30, Sandisk extreme pro 64gb, Sandisk ultra 64gb (micro), sandisk ultra 32gb, and sandisk 8 and 2 gb blue cards. Now my r10 can only shoot in the 32 gb. When i plug the other sd cards it just says "card cannot be accessed, reinsert or format blablah"

I cant even format those cards inside the r10, but they work perfectly fine in my 7d m2 and my pc. Note that i bought the extreme PRO alongside the r10 and it also doesnt work. I dont know what to do. 

[ebiggs1]

"That sounds like you purchased them from an online marketplace, Amazon."

If you did buy from Amazon always check the "Sold by:" claim. Not saying you got corrupt or counterfeit SD but it could be a reason why you are having this issue so it bares some checking.

[LeeP]

in the future, consider buying from a reputable dealer like B&H Photo (there are other good stores too). I've found B&H to be just as fast as Amazon on in-stock merchandise, but the difference is that B&H will be there for you after the sale.