# help

Limits, and what to do when something looks wrong.
## Limits

- 3 projects per account.
- 1 VM awake at a time: opening another puts the last one to sleep.
- 4 awake hours a day, resetting at midnight UTC.

## Something looks wrong

| You see | Try |
| --- | --- |
| An old version of your app | Tap **sync**, and check your agent finished its change. |
| A blank or broken page | Ask your agent to repair the preview (`telescope up` in the repo). |
| Setup fails, or your stack won't run | Probably a stack we don't support yet. Ask your agent to send Telescope feedback; see [what's supported](supported.md). |
| Your agent can't push (403) | Install the Claude GitHub App on the repo. |
| Sign-in loops | Add your VM's address to your sign-in provider. See [your stack](your-stack.md). |
| A phone that no longer opens it | Add it again (`telescope link`). |
| An old home-screen icon | Remove the app from your home screen and add it again. |
| "You've used today's 4 preview hours" | Back after midnight UTC. Use **Sleep now** to save hours. |
| "Previews are paused right now" | Telescope is paused for a bit. Nothing to fix on your side. |
| "You can have up to 3 projects" | Delete one you don't use. |