Also, as a side note, you could use the ‘Go Offline’ under the log in info to still be able to use the engine without an internet connection I believe.
I am having the same issue. Obviously I have the internet to posting this right now. I am getting the same screen. Also when i tried to go offline, Unreal seems not to want to launch. I tried uninstalling and reinstalling. still no fix. I am held up on a project and I really need help asap.