Need help making I2p work

Hi there, a few weeks ago I tried using I2P in Firefox, I downloaded only the Easy-Install bundle since the page said that bundle already contained the Firefox profile and that i don't need to download the one that come in a java package. However, after installing it and opening the shortcut in the desktop, I get 2 icons in the system tray each with different options.
One on the left has the options:
- Start I2P
- Enable notifications (greyed out)
- Disable notifications
- Launch I2P Browser (Safe Mode)
- Launch I2P Browser (Flexible Mode)

The one on the right has these options:
- Network: OK
- Launch I2P Browser
- Configure I2P System Tray
- Stop I2P
- Stop I2P Immediately

The only options that work in opening the I2P browser are the ones on the left, but doesn't matter which one I select, when the browser opens I get this:

Nothing ever happens from here.

And finally, after clicking open the "Browse I2P" icon on the desktop I get 2 notifications saying the same thing:
LoadClientAppsJob (notification title)
Error starting up the client class net.i2p.jetty.JettyStart (notification description)

I hope that you can help me please, thanks for reading. Have a good day!