Volume does not contain a recognised file system

Hello. I bought a couple of months ago 2 SanDisk Extreme Pro Portable SSD. I formatted them in exFAT and stored files and folders in them.
after a while I get a message "You need to format the drive before you can use it. The volume does not contain a recognised file system. Therefore I reformatted then again in ExFAT and re-loaded files.
After a while the same problem occurs again, same message, and cant access my file. This happens in both drives.
What can be the problem ? These drives are being used to store jpg photos and RAW photos. Should I avoid formatting in ExFAT ? What do you recomment me to do ?

Hi @fdormoy,

Have you opened a Support Case? If not opened, for more information, please contact the SD Technical Support team for best assistance and troubleshooting:

Thanks for the link. I just sent a message to create a Support Case