Issue with accessing card 2 when switching recording options on r6 mark 2

[taxcollector5]

Hi everyone. I recently purchased an R6 Mark II and am loving it so far. However, I have just faced an issue that prevents me from shooting photos and videos to both SD cards in my camera. When I switch the recording options on my SD cards from Standard to Record Separately or Record to Multiple, my camera shows the following message: "CARD2 cannot be accessed; reinsert/change the card or format card with camera. I have seen this issue multiple times already when trying to switch recording options. I have formatted cards in and out of the camera, done the registry editor, Windows PowerShell, and file explorer removal of write-only on my cards, while also having cleaned my cards and blowing out my SD card slots. However, this issue still seems to persist. I would be thankful if anyone here would be able to help me with this issue.
Thanks!

[rs-eos]

What specific SD cards are you using (brand, full size vs micro, specifications, etc)?

[p4pictures]

Make sure you are using suitable cards, I would suggest that UHS-II V60 or V90 specification full-size SD cards are what you should be using.

Have you tried swapping the card that works in slot 1 to slot 2, and then the slot 2 card to slot 1?

Also if you leave the recording as standard, can you record stills / movies to the cards in either single slot? 

Secondly can you try using different SD cards in both slots? 

If the problem continues with two different cards - both formatted in-camera, then you may have a camera problem. I have the EOS R6 Mark II and with cards in both slots I can record either multiple or separately. 

[taxcollector5]

I am using a sony tough 128gb v60 in slot 1 and a v90 of the same in slot 2

[taxcollector5]

i do think that the second slot on the camera could be broken as when i swap both cards, i can view the v90 card in slot1 but i cannot view the v60 card in slot 2

[rs-eos]

That could certainly be the case, especially since you already cleaned it. Time to contact Canon to see about doing a repair.

[taxcollector5]

yeah i think the second row of contacts for UHS-II cards is broken/bent as the second slot does work with UHS-I cards
Thanks for the information