Reauthenticate seems to be broken

I’m trying to change the account that is used for Google Analytics WD, but when I press “Reauthenticate” in Settings it goes straight to “Paste the authentication code from the popup to this input” but no popup window shows up to login. And it behaves the same in Chrome (both incognito and not), Firefox, Safari with all adblockers disabled, and popups allowed.

On top of that, I can’t even disable the plugin. Whenever I “deactivate” the plugin, it is still activated unless I delete the wd-google-analytics folder from plugins. However, when I reinstall the plugin it jumps straight to being enabled again. And using “Uninstall” in the Analytics menu doesn’t seem to do anything helpful to this effect.

This may be a bigger issue however, because none of the tracking information is showing up in any of the dashboard widgets as if there is no tracking data available at all (whereas there is months of data for that property in the google analytics account).