Thanks for your message @DeniGu
Sharing the latest screenshot of “Your contributions” after I signed out from Maps, cleared the cookies and also all stored data.
The first badge is still inaccurate, and the points are missing too.
Surprisingly, though the review count is visible, it is up by three (316 as against 313). However, that is perfect in the detailed statistics.
After the capture of the screenshot as above, I checked the contributions once again. Now, there is further degradation stating “You haven’t written any reviews yet!”