If you are unable to connect to Discord, the first thing you should check is whether or not Discord is down. You can do this by visiting the Discord Status page. If Discord is down, you will see a message that says "Discord is down for everyone, or just you."
If Discord is not down, the next thing you should check is whether or not your account has been blocked. There are a few ways to do this:
1. Try logging in to Discord on a different device. If you are able to log in on a different device, then your account has not been blocked.
2. Try logging in to Discord with a different account. If you are able to log in with a different account, then your account has not been blocked.
3. Contact Discord support. You can contact Discord support by clicking here.
If you are unable to log in on a different device or with a different account, and you have confirmed that Discord is not down, then it is likely that your account has been blocked.