2T Elements vs. 5T Elements

Bought 2T Elements in May. Installed w/out issue on Ubuntu/Linux 18.04 LTS. Has worked flawlessly.

Bought 5T Elements last week. Installed on Ubuntu 20.04.1 LTS update. File manager doesn’t see the drive, but device manager says it’s working just fine.

Is there a known issue (&/or workaround) between the 5T & Ubuntu/Linux?