What this service is, how it works, and what it deliberately does not do.
SSHSUPER hands out free tunneling accounts. You pick a protocol and a server location, choose a username, and the account exists a few seconds later -- no sign-up form, no email address, no payment details. Accounts run for the number of days shown on the server card and then expire on their own.
The servers are ordinary VPS machines in several countries, each provisioned with the same stack. Capacity is finite and shared, which is why every protocol has a visible daily limit rather than an unlimited promise nobody could keep.
A short explanation of the protocols on offer, so you can pick one on purpose instead of guessing.
The oldest and most widely supported option. Your device opens an encrypted connection to the server, and everything you browse travels inside it. Well understood, works nearly everywhere, and easy to set up on a phone or a router.
Newer protocols that wrap the tunnel in what looks like ordinary encrypted web traffic on port 443. Useful where plain VPN connections get blocked, because from the outside the connection resembles a normal HTTPS site.
A modern tunnel built into the Linux kernel. Far less code than older VPN software, which means it connects faster, reconnects cleanly when you move between Wi-Fi and mobile data, and uses less battery.
A fallback that carries the tunnel inside DNS queries. It is slow by nature, so it is not for streaming -- it exists for networks that block almost everything else but still have to let DNS through.