If a website appears down, check:

• Does it fail for everyone or only one connection?
• Does the domain still point to the hosting server?
• Is there an SSL warning, 404, 500 error, timeout, or blank page?
• Did DNS, Cloudflare, PHP version, plugins, themes, or files change recently?
• Can you access the hosting panel or WordPress admin?

Open a ticket with the domain, exact error, screenshot, and when the issue started.