External Storage will not eject

I have a MacBook Air. I have SanDisk 2TB external SSD that I use for storage. I use Time Machine to backup the Mac on a different HHD. I have no problem ejecting the HHD that TimeMachine uses. I cannot eject the SSD after backing it up. I use the SSD for general expansion of the computer drive (without using TimeMachine) and it picks and chooses when to actually eject.

I have tried logging out multiple times. I have tried restarting the computer with the drive plugged in. I don't want to test the "journaled" feature that comes with unplugging the drive while the computer is shutdown, I'd rather this just work right. How do you get the feature/function "eject" to work properly?

Thanks in advance!