White labeling, Reselling and Licensing

Hello Jitsi Team,

  1. I would like to do some changes in the jitsi-meet app in terms of UI and adding new features thereby reselling this app with my own brand name. Am I allowed to do resell this app with my own brand?

  2. Also if I am adding/editing any source code in any of the files, should I need to add any license for it.

Thanks,
Kalai