The site is down
Do this now
- Open the site on your phone with Wi-Fi switched off. If it loads there, the problem may be your network, not the site.
- Take a screenshot of exactly what you see, including any error message.
- Check your email for messages from your host or domain registrar about an unpaid invoice, a suspension or an expired domain.
- Write down anything that changed just before: an update, a new plugin, a setting.
Don’t
- Reinstalling plugins or restoring backups over the top. It can hide the cause.
- Paying anyone who contacts you out of the blue offering to fix it.