I couldnāt find any other reasonable causes, so this may just be up to Roblox.
Anyway, this archive problem must be because the Asset mustāve been Deleted, Reuploaded or possibly Privated (By another user.) This is clearly obvious, Iāve looked into this bug or issue and found a few Forumās you could look at.
Using https://assetdelivery.roblox.com, the mesh still appears to be archived. Archived assets donāt get their own Creator Dashboard error message afaik, and rather, the thumbnail just loads as an archived icon. The asset is, at least presumably, actually archived, and this (presumably) isnāt just a visual bug.
I donāt know if we are on the same page here, but last time I checked, re-uploading an asset doesnāt revoke access to the old asset? Did you perhaps mean to say that the user may have archived the asset because they uploaded a new replacement? Also, how would another user private the asset, I donāt think the user themselves can even do this, is this a mis-wording?