You stated that you "emailed chrome store but no one has responded", but it looks like you and Developer Support have exchanged emails on a couple different support requests. More to the point, it looks like a member of the developer support team replied on Dec 9, 2021 and stated that "As for the active users on [extension ID], due to suspicious user-count activity, the stats will be hidden." To put this another way, the user count is not shown when we detect suspicious or potentially abusive activity. I don't know what specific activity is causing the user count to be hidden, but I'd be willing to bet that creating multiple copies of the same extension isn't helping matters.
We have a standing policy of not discussing the internals of our review and abuse detection processes. That's why I don't think support will be able to provide you with a concrete reason the user count is currently hidden or direct guidance on what to do in order for it to be displayed again. That said, you can always follow up on the case and ask; worst case they just won't be able to answer.
My personal advice would be to pick one version of the extension that you want to keep long term, unpublish and archive the copies, do your best to ignore the fact that the user count is hidden on the item listing, and promote the extension as you would normally. If the user count doesn't return within, say, a month or so, then use the "Something else (general support)" option on the
One Stop Support form to ask support to look into the missing user count on your item's listing.
Simeon - @dotproto
Chrome Extensions DevRel