everything is ok. Are you sure your facebook email and password are correct? 2) Interface color and style, I didn't hire a designer, just keep it simple and professional, in my eyes, hehe. 3) (1). You can review job posting offline or sometimes after you applied, the job posting url is no longer available so you cannot review it before interview; (2) you can save resume into your folder; (3) you can edit notes to follow up each job application.

Thank you for your feedback again!