Doesn't open, using port but saying it's blocked, Linux Mint

- [ x ] I am on the [latest](https://github.com/ActivityWatch/activitywatch/releases/latest) ActivityWatch version.
- [ x ] I have searched the issues of this repo and believe that this is not a duplicate.

- **OS name and version**: Linux Mint latest
- **ActivityWatch version**: 0.13.2 Linux

## Describe the bug
I never get the tray icon or any indication of anything running. The first day I tried it the localhost timeline was showing up fine but saying there was nothing recorded.
I left it for some time and now I'm trying again, redownloaded, still nothing happens when I double click the aw-qt file. Now the timeline doesn't load, says unable to connect.
So I thought of running it in the terminal and it says it can't use the port 5600 because it's being used, to pause whatever app is using it. I check what's using it and it's this. Yet nothing in my tray and nothing in the localhost timeline.

## To Reproduce

## Expected behavior
An icon is added to the tray when double clicking aw-qt

## Documentation

## Additional context
I'm a Linux newbie
Thank you