I have a big issue and would like to ask you for help. I've migrated my Minecraft server's website under WordPress administration. Before I moved it under Wordpress it had login page to access GUI which contained few thing for communicating between website & server by rcon. I need to use own login which will create session. When session will be created I need to add one button into menu + let access logged user to my GUI. (I need have GUI like normal WP page with menu etc.) Is there any way how to do that? Thank you!