# Troubleshooting

Quick fixes for the handful of things that can go wrong: a blank window, “Not connected”, an expired session, or missing mail.

3 min read. HTML: https://sendwithflare.com/help/troubleshooting/

## The app window is blank

Hard-refresh the page (`⌘` `Shift` `R` / `Ctrl` `Shift` `R`) or open [app.sendwithflare.com](https://app.sendwithflare.com) in a private window. If you're developing locally, start the web app with `npm run dev:web` from the repo root.

## It says “Not connected”

Open **Settings → Connection** and confirm the *Worker API URL* is set and the *Session token* is filled in. If the token is empty, sign in again to regenerate it. The status dot turns green once the app can reach your Worker.

## “Your session expired”

Tokens don't last forever. When a session expires the app asks you to sign in again — just log back in and your token refreshes automatically.

## A test email never arrived

- Double-check the [Email Routing rule](/help/connect-cloudflare-email-routing/) points at the `flaremail-api` Worker.
- Give it a minute — routing can lag right after you create a rule.
- Confirm Email Routing is enabled and your MX records are verified in Cloudflare.