Where to download the latest version 4.6.8?

The version I downloaded here(RoasTime™) is v4.6.16,I can’t log in on both windows and mac systems,and i cann’t log as a guest, The prompt message is:auth/authentication-failed & auth/network-request-failed,But I can log in to roast world normally,I regret deleting all the old versions-_-#


Login is successful,The firewall does not prompt, but please turn it off,Or change the network environment.