When a page does not load, the fastest approach is to determine whether the issue affects one browser, one device, one network, or everyone.
Test another trusted website, then test the same page in a second browser. This separates general connectivity from a site-specific problem.
A private window bypasses most stored site data and is a useful first test.
Content blockers or security extensions can stop scripts and redirects. Test only long enough to identify the cause.
Managed VPN or proxy settings may be required by policy. Do not disable them without authorization.
If multiple devices and networks show the same result, official service status information or support may be needed.