mqttcloud.ir open in mozilla butt not connect

Please explain the problem in detail. What happens? What are the exact error message(s) ?

Thanks for your replay when I open mqttcloud.ir in Mozilla Browser and click on connect button , show me a error massage. butt in my home pc with Mozilla Browser when i click on connect button in this site , i ccan onnect to Mqtt Server for IOT projects.

Have you tried contacting the website support? There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own. https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message https://support.mozilla.org/en-US/kb/connection-untrusted-error-message [https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors?redirectlocale=en-US&redirectslug=Error+loading+web+sites Websites don't load - troubleshoot and fix error messages] http://kb.mozillazine.org/Error_loading_websites [https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean What do the security warning codes mean]

Are you using "Delete cookies and site data when Firefox is closed" in case this makes a difference (service workers) ? Any related messages in the Web Console ? *"3-bar" menu button or Tools -> Web Developer *https://developer.mozilla.org/en-US/Tools/Web_Console

That was very good work. Well Done. Please flag your last post as '''Solved Problem''' as this can help others with similar problems.