@BartonBooks:

I also was affected without notification.  I did not find out till I did my weekly check of this site and found my Profile was still there, but all of my 56 reviews were gone. I freaked out! It took many years to get 56 reviews and I have now dropped to third place.

I went to the diamond team and asked for support. That’s when I was told that they were updating the site (probably for security reasons but this is a guess on my part).

Now you you have to upload a drivers license or passport to have them approve/reload it.  I am sure there is a reason they did not announce it to us too, but I do not have an answer for that either.

If you do all the steps and there is still an issue with it, contact your support team.  They are truly top notch.  They found my reviews and are fixing my issue.  I still have to upload my license but it’s a step in the right direction.