I had given reviews for so many places last month and this month. I completed 100 + reviews and got more than 50 likes. I got a badge called Review Master. Today When I saw my contributions page, the review count is showing as 0, thought I could find few review and ratings under review tab section. As a result all my points came down. 1st screen shot suggest what my contributions were last 6 months, where you see my reviews were 79.
This happened to me as well yesterday. My 100+ reviews are still publicly visible (e.g. in incognito mode), but my review count, and the associated points, and my review likes, are set to zero. This happened on all my devices, so I doubt that the fix is a matter of just logging out, and deleting cookies. I assume it is a bug which will be eventually sorted out.
And now all is good again! My review stats are now correct. I did nothing on my end, so assume that Google fixed something on the “cloud” side. Probably like restarting a stalled daemon on the VM which serves my account, or something else like that.