This is what I see in the Notifications window. Clicking on the button changes nothing.
I checked the versions in the place you mentioned. They are all the same.
In the version.php i discovered this
$plugin->version = 2018051400; // The current plugin version (Date: YYYYMMDDXX).
$plugin->requires = 2018050800;
but in my moodle frontend I see Moodle 3.5.2+ (Build: 20181019). If the number in brackets is the version number: Should I try inserting it in the requires line because they don't seem to match?
Or could I try deinstalling and reinstalling the analytics module under /admin/tools.php?