I've tried it on several profiles since yesterday, but today I keep returning to [[Dawalt-38|Sarah Catherine (Dawalt) Johnson (1852-1937)]] to test and what I get is:
"Find a Grave", database with images, , Memorial page for Sarah Catherine ''Dawalt'' Johnson (1 May 1852-11 Jul 1937), citing Mount Cemetery, Little York, Washington County, Indiana, USA.
The ID used to be between those two commas between "images, , Memorial"
I just tried on her mother and got the same citation, for her.
I'm not very computer savvy, so "try restarting the browser and disabling/reenabling the extension" isn't clear to me. I closed the Crome browser, cleared cache, and turned off/on Sourcer. Returned to Sarah Catherine's FG profile and got the same result. I saw an option to remove it - is that what I should do then re-install it? Or restart my computer maybe?
eta: the version is 1.3.0