I have released a new version of the WikiTree Sourcer browser extension. It should now work with the latest changes to the add person system and the middle name changes.
The latest version is 1.6.5. It is available for Chrome, Firefox and Safari. The Chrome version includes support for other Chromium based browsers such as Edge, Vivaldi etc. It works in the Kiwi browser on Android phones and tablets.
Please let me know if you see any issues.
In most cases it will update automatically but it depends on whether you have disabled that. More info here.