You should be able to post again. However, from this point forward any new claims must include proof that you are using the land. Proof can include screenshots, videos, or some other evidence that you have a permanent, reinforced structure on the land. Larger claims may require more than one such piece of evidence, all at our discretion.
This is to discourage land claims made before the land is used, or frivolous claims over land that others are using. Thank you for understanding.