Which tool do you use to flash these cards?
I mean, a card malfunction can happen (for what ever reason), but two?
And with a commonly used size of 32GB (still too big) getting the same issue?
Perhaps something else is wrong.
Yes, there is a manual procedure to res-size, but we just concluded res-size was OK.
This easily checked with sudo parted -s /dev/mmcblk0 print free
When there is no last line with a “FREE” amount of MB’s, then the data partition has its maximum size.
You can resize manually when you have an existing linux machine somewhere.