I am seeing two cases in which businesses have lost all their Google Business Profile (GBP) reviews. I came across the first thread on Reddit. The next time I saw somebody post in a private Slack group I am in. I am asking Claudia Tomina for clarification on the issue and Google’s knowledge of the issue. She is a Google Business Profile Product Expert (GBP PE). Amy Toman, another GBP PE, is seeing signs that Google is removing all of the reviews after a review is flagged and removed. Google seems to think that this is working as intended (WAI). I say No WAI.
If you have lost all of your reviews. You need to contact support. If and when support can’t assist you, head over to the help forum and include the case ID.
Time will tell how long it takes Google to fix this issue. Have you lost all of your reviews?