Hey, so one downside of reversible suspensions in Mastodon 3.3.0 is that due to an oversight, the suspension is only communicated to the account's followers, which is usually far from everyone who needs to know about it. Due to this, a lot of already suspended accounts keep getting reported from other servers. Until we release a fix, consider checking if the account still exists on the original server whenever possible. Sorry for the inconvenience.