I need a wpmu expert developer to help me

I've had 3 people abandon my site as they can't get their head aorund the membership supporter plugin and all the buddy press features - I need someone who knows these plugins to help, can anyone help?

I've tried posting a job on the job board and contacting developers directly, with no reply.

I bought the pre-installed kit from wpmu dev.

Here's the site: http://bitmap.me/tastour/

Many thanks.