I am really thank you for you replying and your document.
Now I am using Easysocial to register new user with many profile types from Easysocial too.
Do you have document about this way that it allow register with Easysocial can post add item with K2 too.
And on K2 login, I don't see menu to add news item. When I click on my page on, it links to easy social.
prnt.sc/dfnfrw
thank you...