This "issue" does not seem to be a Chirp issue, but rather a computer/Linux Mint issue. It certainly isn't urgent for the Chirp team.
I suspect you're using a version much higher than 2.0, since I'm currently running version 20.2. I don't believe they ever even had a 2.0 version.
On my machine, I installed the Flatpak version of Chirp, and it works well for me. Depending on your Version of Linux Mint, you may need to install the flatpak version.
YouTube is your friend in cases like this. Here's a video showing how to install Chirp in Linux Mint:
https://www.youtube.com/watch?v=S9EzmkG8hOs
Here's a video on programming you radio using Chirp:
https://www.youtube.com/watch?v=lVksQ1L3IJA
If you're not sure how to start Chirp in Linux Mint, you should be able to do so just like any other application.
Assuming it installed correctly, you should see it in your applications on your "start" menu.
Once it opens, you should be able to connect a radio to the computer through your programming cable, then use Chirp to Download (read) from the radio (select this option from the Chirp menu bar).
You can then edit the resulting file to your liking, and upload (write) it back to the radio.
It's really pretty simple, and the videos linked above should help, but if not, a quick search on YouTube should provide more information.