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Troubleshooting

Fixes for SSH errors such as Permission denied (publickey) and changed host keys, booking questions, and time zone mix-ups.

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Connecting

Permission denied (publickey)

text
user@my-llm-box.res-4ad0a522.ssh.gputolease.ai: Permission denied (publickey).

The machine didn't accept any key your SSH client offered. Check, in order:

  1. Is the reservation live? The machine accepts connections only while the reservation is Live. Before the start, during Setting up, and after the end, you can't log in.

  2. Is it the right key? The machine has only the key you chose for this reservation; the reservation's page shows its name. Compare fingerprints — the one in SSH Keys in your dashboard and the one of your local key:

    bash
    ssh-keygen -lf ~/.ssh/id_ed25519.pub

  3. Is SSH offering it? If the key isn't the default file, name it:

    bash
    ssh -i ~/.ssh/my_other_key user@my-llm-box.res-4ad0a522.ssh.gputolease.ai

    If your agent holds many keys, SSH may give up before reaching the right one ("Too many authentication failures"). Add -o IdentitiesOnly=yes with -i, or set it in your SSH config.

  4. Is the user name right? Copy the command from your dashboard as it is: both the user and the address matter.

To see exactly which keys SSH tries, add -v:

bash
ssh -v user@my-llm-box.res-4ad0a522.ssh.gputolease.ai

Look for lines starting with Offering public key.

WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED

text
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

SSH remembers each machine's host key in ~/.ssh/known_hosts and warns when it changes, which could mean someone is intercepting the connection. Each reservation has its own address, so you'll rarely see this. If you do, and the address is exactly the one in your dashboard for a reservation that's live right now, the machine was most likely set up again (for example after we moved your reservation to another machine). Remove the old entry and connect again:

bash
ssh-keygen -R my-llm-box.res-4ad0a522.ssh.gputolease.ai

If you're not sure why the key changed, don't connect: contact us first.

Connection timed out or refused

  • Check the reservation is Live. Allow up to about five minutes after the start.
  • Check your own network: some office, hotel and public networks block outgoing SSH (port 22). Try another network, such as a phone hotspot.
  • If it still fails while the reservation is live, contact us with the reservation ID.

The connection drops when I'm idle

Add ServerAliveInterval 30 to your SSH config, and run long jobs inside tmux or screen so they survive a dropped connection. See Connecting.

Setting up takes longer than five minutes

Refresh your dashboard: the stage updates on its own. If it's still Setting up ten minutes after the start, contact us with the reservation ID.

Booking

Today isn't bookable

That's expected. Daily reservations start at 00:00 UTC and must start at least an hour after you book, so today — which started at 00:00 UTC — can't be booked. Tomorrow can be booked until 23:00 UTC today. See Lead time, window and limits.

Every day in my range is green, but I can't select it

A reservation must fit on one machine, and no single machine is free for every day in your range. Try a shorter range, or other days. Availability explains why.

"You can hold at most 2 current or upcoming reservations on this plan"

You've reached the plan's concurrent limit. You can book again on that plan once one of your reservations has ended. See Concurrent limit.

"Those days were just taken"

Someone else booked the last free machine for those days a moment before you. The calendar has refreshed; pick other days.

"This is still not available in your country"

Sign-up and reservations are open in the EU, the United Kingdom, the United States, Canada, Australia and New Zealand. If you're in one of these and see this message — for example because you're travelling or on a VPN — contact us.

Time zones

My reservation seems to start on the wrong day

All times are UTC. Depending on where you are, 00:00 UTC can be the previous evening (in the Americas) or the next morning (in Asia and Oceania) in your local time. For example, a reservation starting Tue 22 Sep 00:00 UTC starts at 20:00 on Monday 21 September in New York during daylight saving time, and at 10:00 on Tuesday in Sydney. Check the start and end in UTC on the reservation page before you pay.

Convert a UTC time to your time

These print a UTC time in your computer's time zone. On Linux:

bash
date -d "2026-09-22 00:00 UTC"

On macOS:

bash
date -r "$(date -j -u -f "%Y-%m-%d %H:%M" "2026-09-22 00:00" +%s)"

Email

I didn't get the verification or reset email

Check your spam folder and wait a few minutes. Then request it again: Resend verification email, or Forgot password? on the login page. Still nothing? Contact us.