Same issue, I’m in the UK. Been trying for the past hour to get on MSFS 2020.
During the boot screen it tells me there’s no connection, that there must be a problem with my internet (tried flushing the DNS and rebooting my router). Briefly, it sometimes says “Successfully Connected”. But when it eventually loads up to the main screen, the marketplace and server options in the top right are greyed out and unselectable. Then, about 30 seconds afterwards, CTD.
I’ve never had anything like this before.