Hi Marji and Welcome.
The password for that section is currently fixed, and is contained in the Welcome email we sent you on July 8th, in the first set of bullet points. I can resend it if you would like.
I will try to address your questions one at time.
I will be reviewing Pending properties shortly, then your property should show.
We use the Social Networks Auto Poster (SNAP) plugin for social syndication and it is the most popular, simply search SNAP in the Add Plugins section. The free version should be fine for your needs. There are various topics of conversation around social posting, and the community home page always has some latest news and views on the subject.
Within that plugin there is a lot of guidance and training material available on matters such as keywords, and they are the real experts on this.
I hope this helps, and I look forward to reading morel about Bonaire.