Notes
1: Grogbuild: Some very useful and helpful customisation/installations applied to OpenATV image to help users. These have not been updated to python 3.x images yet.
Most of the items in his build are available for users to install from plugin server
2: It seems you installed an image from 2020 using the recovery menu and then applied the 18months plus worth of updates, Not the best way forward.
3: OpenATV 6.4 will stop having updates in a few weeks. It is the last ATV image to use python 2.x. ATv 7.x uses python 3.x. A few plugins have not been updated to python 3 yet.
4: Your USB device is not in a linux file system You only have used ~350Mb out of the 32 GB.
Decision you have to make, further advice will come later. In essence you will have to setup your box
Are you happy to stay on ATV 6.4?
Do you need to install Grogbuild?
Initial recommendations from me:
1. Backup files to PC first, then format/initialise your USB device so it is in a linux file system. You will not be able to hotplug into a windows machine.
2. See here for better screenshots if it helps ( your pictures are clear, just for reference):
Taking screen shots and uploading attachments to the forum
3. Whatever you decide above, I recommend a flash/reflash. You can do that using the remote. Let's see what you decide.