I think Section 8 "Use of the services / content" is likely relevant in this case.

Given one of kiwix.org's goals on their homepage is "access to internet ... [due to] ... outright censorship" (which is legally required in some countries), likely they are in violation of T&C in

"8.1. The Customer is obligated to check and comply with the legal provisions arising from the use of the contractually agreed services"

and

"8.4. If we become aware of illegal activities, we are obligated under Art. 6 Abs. 1 DSA (Digital Services Act) to request that the Customer immediately removes the offending content and we are entitled to lock the Customer’s access to their Hetzner services or account."