@Jonobie

The servers on that list have agreed to the "Mastodon Covenant" involving reliability and moderation. They have promised to give a certain amount of warning before closing down. I think the warning period is three months?

This gives you time to transfer your account to another server, including your follows and followers:

https://fedi.tips/how-to-use-mastodon-and-the-fediverse-basic-tips/#TransferringYourMastodonAccountToAnotherServer