20. ENTIRE AGREEMENT; SEVERABILITY. These Terms, together with the order confirmation(s) sent from Hashfast to Buyer, are the entire agreement between Buyer and Hashfast with respect to its subject matter and supersedes all prior oral and written understandings, communications, or agreements between Buyer and Hashfast.
I can't see how that can be legal, but as I stated I would like an expert opinion.
What it is trying to say is that if I called John before I made a purchase, and he told me something misleading, that the TOS agreement replaces anything he told me. But that only applies to purchase made under that version of the TOS (and may not be legally enforceable, if John told you some whopper lie that you can document).
Again, it doesn't matter if Hashfast revises the TOS 94,183 times and writes in Viking runes or Hindi. The version of the TOS that governs your purchase is the version of the TOS that you agreed to when you made the purchase - not any subsequent revision.
In other words, subsequent revisions are not applicable to your purchase.
(Somewhat confounding that - Hashfast had one version of the TOS online when I ordered, and then sent me a different version of the TOS with my order confirmation! Morons!)