So it's folder '2' that your having a problem with? Go to your sub-domains at your cpanel and try to delete it there. Then try again to delete it in addon domains.
no, i dont know that we can just have 2 addon domains or not, because last month i have 3 or 4 addon domains and its okay, but now when i try to add more addon domains , it says 'you are using all available addon domains' so, my maximum addon domains is just 2, and i cant create new subdomain from my addon domain,
and i have tried to delete the subdomain, but it says Sorry, the subdomain agelkikumaru cannot be removed because it is linked to the addon domain agelkikumaru.wt f.la. You must first remove the addon domain.
and when i tried to delete the addon domain : Error from park wrapper: Sorry, you do not control the domain agelkikumaru.wt f.la