Are you aware that your instance is currently home to nearly 20,000 users, while still only reporting just 2 posts? From the outside looking in your instance looks like the current home of a spam bot farm waiting to happen.
Most of those users seem to have joined in the past 2 days. https://fedidb.org/network/instance/lemmy.elest.io
Just a reminder that “Mastodon” is the software, not the specific service provider. Mastodon.sdf.org is different from, say, Mastodon.social even though they run the same software.
If you haven’t already, you should contact the admin for that instance with your concerns. The contact the site lists is mastodon@mastodon.sdf.org