I can't add anyone to my plot because it belongs to my old username (Daniel9757) and I want those plots (I am fine if you dispose them for me.)
Email [email protected] the issue you are dealing with and you should get a response within the week. Also, try to change your name back then the issue should be solved. Hope this helps
Like @NoMoreSanity and @iReplying said, email [email protected] about your issue. Include screenshots of the sign of your plot and what you want to do. Another option like what @iReplying said was to change your name back, though this will leave your name open for another person to take
