If you are not able to login to Instantly with the error:

“This site can’t be reached” Err_connection_refused

This can happen if your computer/router is caching an older DNS configuration. Could you please try accessing the app here?

It's the same app deployment but with a different URL (which should help if caching is indeed what's causing this).

If this is not the case, please reach out to our support via chat.⚡