If the diagnostic didn't solve it, you need surgical fixes.
Ensure that your internet connection is stable and working properly: kproxy not working
Here are some additional tips and tricks to help you get the most out of KProxy: If the diagnostic didn't solve it, you need surgical fixes
If the web-based version is failing, the KProxy browser extension (available for Chrome and Firefox) is often more stable because it routes traffic at the browser level rather than just through a single tab. If the diagnostic didn't solve it
Your browser might be trying to load a "broken" version of the site from its memory. Clear your cookies and cache for the last hour and try again.
If you have spent 20 minutes trying to fix KProxy, stop. Time is money. Here are superior alternatives based on your needs.