Using the IP address, as Guy suggests, is the only way I can access eisy.ui since macOS (Sequoia and newer web browsers including Safari and Firefox) do not give an option to access a non-secure web address. But once logged in with eisy's IP address and later when logged out for inactivity, if you refresh the page to log in again, the appended characters in the URL that were added during browsing within eisy.ui will prevent login from working. In that case, remove the appended characters at the end of the URL leaving only eisy's IP address. Or use a password manager to login each time. By comparison, on Windows 10 the Edge browser permits access to a non-secure site by accepting the risk.