On the free tier, the server didn't care if your file corrupted. On Pro, it verified every byte.
A reply came almost instantly from a user named CypherPrime . “Free tier is a trap. The servers intentionally corrupt packets on large archives. You’re downloading garbage data, Kael.” uploadhaven pro for upd free better
October 26, 2023 Subject: UploadHaven Pro Features, Security Risks of "Free" Methods, and Comparative Value On the free tier, the server didn't care
For $9.99/month (or less on longer plans), Pro claims: On the free tier
"UploadHaven Pro for UPD free better" doesn’t exist as a safe tool. Any site claiming otherwise is selling you risk, not savings.