Before blaming the proxy, confirm the site itself is online. Use downforeveryoneorjustme.com. If the site is down globally, no proxy will work.
A permanent fix to proxysite.com’s reliability would require moving from server-side DOM rewriting to a browser-side service worker proxy + backup remote fetch. However, that would break the “no installation” promise. proxysitecom free web proxy site fix
A hybrid approach:
Proxysite.com currently does not implement this, which explains its persistent fragility with modern single-page apps (SPAs). Before blaming the proxy, confirm the site itself is online
Here is the definitive step-by-step troubleshooting guide. Proxysite