If you're having problems connecting to Discord on Desktop today, try your phone and/or phone data. If that doesn't work, connecting over VPN seems to solve the issue for now:

https://news.ycombinator.com/item?id=37701476

You also may be able to use the website version for today.

EDIT: Changing your DNS may also resolve the issue.

You are not actually blocked; it seems to be affecting a lot of people at the moment.