I’m trying to view the documentation on this page: http://codex.simple-press.com/membership-expired/?wlfrom=%2Fcodex%2Fplugins%2Four-plugins%2Favailable-plugins%2Fplugin-editors%2Ftinymce-editor%2F in order to figure out how to adjust the buttons users can use in the tinyMCE editor, however it is saying I am not a member?

I purchased a silver membership, why can’t I see this documentation?