Click on the chat info, and click on agree to the rules. Then read them, it's best of you take your time by reading this as many often just scroll through them. Good luck! The chat is pretty fun, it offers good info also.
Mobile version won't let you, sorry. But use a computer version, even for phones it's a good idea. Also using the lite/computer version gives you access, to add and edit your bio, upload profile pictures, and see your friends, as well as favorites. Mobile only let's you access your profile and shows pictures and if your in a coven.
The administration are ganna be updating fairly soon to the site, check out the post.