Hi Rich,
If you create a new topic on the new forum we can give further advice.
The B2 can format the stick. Go to 'Settings' -> ''Maintenance' -> 'Format USB C'
The exFAT format won't work on the B2. It MUST be FAT32.
The other thing to look out for is cheap fake USB sticks, especially 2TB versions. Using these will lose you data. So, be careful!
Peter.