It looks like you either didn’t claim it or you trusted the wrong people. You cannot siege a person when they are either offline, not in the claim or the person is a cadet or lower I believe so it must have been an issue with the claiming

Get a golden shovel, next time you’re online, and right click 2 corners and if you have enough claimblocks it will create that claim but you only get 1 claimblock per minute so you may have to wait some time to claim it all unless you donate on the website to get them. If it’s an issue with trust then do /trustlist and that will show you all the players that have trust in your claim