Unable to remove inactive member from three-player co-op in Hypixel SkyBlock

We have a three player coop on Hypixel Skyblock.
One of our members has been in-active for over 4 months. We have attempted to Kick them using the Commands and Profile Management for the coop but it will not work.

Using the Command /coopkick <player name> The game states: "Player not found. Did you spell their username correctly?" I have checked the spelling repeatedly with no success.
Myself and the other active member have also tried using Profile Management to do a majority vote Kick but the game is not giving that option and seems to believe we are in a TWO player coop. (Refer to BELOW Attachment.) In the attached screenshot you can see the game dialogue registering us as a two player coop but you can clearly see we have THREE members.

Has the command to remove a member changed? If so, what is the command and why has it not been added to the command list in-game?
Is this a program issue or has the ability to remove members been removed all together?