# A mode won't start

> What the messages mean when Zenith refuses to start a run, and how to fix each one.

When a run can't start, Zenith says why. The **Run** tab also lists problems under **Can't run yet**.

| Message | What to do |
|---|---|
| **Select at least one account** | Select accounts in the mode's account list. |
| **None of the selected accounts is ready** | Sign the accounts in again. See [Sign-in required](https://pogozenith.com/docs/common-issues/sign-in-required/). |
| **This mode excludes the protected main account** | Pick other accounts. This mode doesn't run on your main account. |
| **Stop the active mode first** | Only one mode runs at a time. Stop the current run. |
| **Finish or cancel batch enrollment first** | Wait for the batch to finish, or tap **Cancel batch**. |
| **Import a GPX route or add coordinates first** | Farming needs a route. See [Farming](https://pogozenith.com/docs/modes/farming/#route). |
| **Choose a valid Stamp Rally** | Pick a rally, or add at least one Custom location. |
| **All selected accounts are already complete** | Every selected account finished this Stamp Rally. Pick another rally or other accounts. |
| **Pokémon GO is not installed.** | Install Pokémon GO, at a [supported version](https://pogozenith.com/docs/getting-started/supported-devices/#pokemon-go-version). |

> [!TIP]
> Run **Settings › Support › Environment checks** first. It catches most setup problems in one go.