MicroSD card works on laptop but not on brand new phone, phone works with other card.

The card is a SanDisk Ultra Plus 256GB. I've had it for at least a year with no issues. A few days ago it stopped reading on my Note 9, which was a little cracked, so I thought it was an issue with the phone itself. But the behavior persisted to the new phone (note 20u). So I popped it into an SD adaptor to check to see if my laptop would read it, and it does. I was able to copy my files, scan for errors without any found, and reformat it (exFAT), none of which resolved the issue. I tried a different microSD card in the new phone and it works. I don't see any physical damage to the card, so I'm really puzzled as to why two different phones aren't picking up this one card. I couldn't find anything specific on Google, and was wondering if anyone had seen anything similar. Thanks.