tesla,
Your site has no cache or backward links per Google, and is gray...to me, that is an indication of a banned site, or at least, a site with problems. Using your suggested tool (
www.checkpagerank.com), your site comes up as a 3/10 not 5/10.
The Alexa ranking is really not indicative of anything, as it can be easily manipulated. I have been as high as 30,000, and now I'm hovering around the 300,000 last time I checked, out of curiosity, a couple of hours ago.
You may want to check to see what the problem is between your site and Google...I don't know of anyone who would want to link with a site in that condition.
Good luck!