# Troubleshooting and FAQ

The problems GrandNode administrators meet most often - e-mails that do not arrive, an unstyled admin, pages that return 404, changes that do not show, missing payment or shipping methods, sign-in and start-up errors - with the cause and the fix.

## Documentation

- [Where to start when something is wrong](https://grandnode.com/troubleshooting-first-steps.md): A short routine for diagnosing GrandNode problems: system warnings, the log, cache, store settings, restart, and what to put in a report.
- [E-mails are not sent or do not arrive](https://grandnode.com/troubleshooting-emails.md): Why GrandNode e-mails do not arrive: inactive templates, the e-mail queue, SMTP errors, the Send emails task, and spam filtering - checked in order.
- [The admin panel has no styles or scripts](https://grandnode.com/troubleshooting-admin-unstyled.md): Why the GrandNode admin, store or vendor panel loads without CSS and JavaScript, and how to fix it: environment, publish output, proxies and caching.
- [Pages return 404 (page not found)](https://grandnode.com/troubleshooting-page-not-found.md): Why product, category or page addresses return 404 in GrandNode - after installation, unpublished or store-limited items, renamed URLs.
- [Changes do not show up](https://grandnode.com/troubleshooting-changes-not-visible.md): Why a change in the GrandNode admin is not visible on the storefront: cache, store-specific settings, theme overrides, plugins needing a restart, browser cache.
- [A payment or shipping method is missing at checkout](https://grandnode.com/troubleshooting-checkout.md): Why a payment or shipping method is missing in GrandNode checkout: activation, store limits, restrictions, rates and product settings.
- [Sign-in and access problems](https://grandnode.com/troubleshooting-sign-in-access.md): Locked accounts, forgotten admin passwords, staff who cannot see a menu, store managers and vendors who cannot open their panel - causes and fixes in GrandNode.
- [Start-up and installation errors](https://grandnode.com/troubleshooting-startup.md): GrandNode start-up problems: the installer appears again, the database version is not supported, MongoDB connection errors, wrong URLs behind a proxy.

- [Web page](https://grandnode.com/docs-troubleshooting)