When you visit wup-7b4df495.us.v2.we-stats.com, you get a plain 404 error. There's no website, no login form, no product page — just a dead subdomain. That's not necessarily a scam; it's more likely a misconfigured analytics endpoint or an internal address that wasn't fully cleaned up.
For sites like this, the usual questions — "is it safe to buy from?" or "should I use this service?" — don't apply because there's nothing to buy or use. The domain has a valid security certificate, it's hosted on Microsoft's reliable network, and it hasn't been blacklisted anywhere. The lack of any history or contact information is expected for a nondescript subdomain.
If you came across this address in a link or script, treat it as a broken trace rather than a threat. There's simply not enough here to form an opinion beyond "empty and harmless." No wup-7b4df495.us.v2.we-stats.com reviews exist because there's nothing to review.