Hello Keikakujin,
If you are unable to rejoin the server by using the standard link, you can try reaching out to our support team to look into it.
If you believe it may be due to a moderation action. As part of our code of conduct, we do not publicly discuss moderation actions in an effort to prevent further harassment.
In both cases, either with an account access issue, or an appeal, you can submit a support ticket here: https://support.lastepoch.com/hc/en-us/requests/new?ticket_form_id=1260807240890 . Appeals will be reviewed by someone other than the person who enacted the action in order to ensure a fair review of any actions.