At context of Firefox Extension,applies to all WebExtensions
At 2960, background.js
At 74, popup\context-menu.js

Append `|| 1` to the if condition having !filters.length
At 209,438, filters.js
Append `&& 0` to the if condition having this.showPremiumPopup() in block

At 8753,8745,8732, background.js
Comment out to hide welcome message
At 3110 background.js
remove a line in setUninstallUrl  to hide uninstall message