Section 7:
(c) use, or provide ancillary offerings to anyone, that are not offered within the Services by us (or the functionality of the App Store), such as hosting, “leveling” services, mirroring our servers, matchmaking, emulation, communication redirects, mods, hacks, cheats, bots (or any other automated control), trainers and automation programs that interact with the Services in any way, tunneling, third party program add-ons, and any interference with online or network play;
"Tunneling refers to the specific process of encrypting and encapsulating data to send it through a public network, which is a key feature used by most VPNs to protect your data when connected to the internet; essentially, tunneling is a method used by VPNs to achieve their secure connection."
If using a VPN is tunneling why do mods state it's allowed? Make it make sense.