Installed JJ - do these settings look right?

[mahesh]

I removed Windows 10 and installed Ubuntu Jammin' Jellyfish on an old laptop and the install seems to be successful, but I'm not familiar with Linux and some things look odd. I'm hoping someone might let me know everything's okay, especially the FF settings. I haven't hooked up to the Internet yet.

First screenshot:
The " C Drive" tmp folder. I didn't try all the folders but the ones I tried, I was able to access the folders with my password. It's the whole red X/private verbiage that looked odd.

Second screenshot(s)
The Firefox browser settings are a bigger concern. Only certain toggles are able to be turned off, and some toggle back on with 10-15 seconds. The last 5 toggles in the second screenshot won't toggle off at all.

Third screenshot:
I'm not able to "unset" any of the options. Is this normal?

As always, thanks for your time!!