I was finally able to painstakingly find the 9 keys and open thee three portals - when I got the message that the connection would be terminated in 20 minutes… Excellent timing!
I was able to beat all the bosses, except for Mephisto and then the connection was shut down. FML. Just wanted to share. Bye 
It’s due to the cycling of the 22 nights of terror events. The event cycles at 11AM Pacific. Any players that are on a game server with a game that was created before 11AM Pacific are restarted a short time afterwards… It’s Blizzards way of booting players off of the server so players can’t continue to exploit… Err I mean use their favorite 22 nights of terror event mod for weeks. Imagine if players kept a game running just to keep using the -50% vendor discount.