seo – Google webmaster tool excludes all urls of site

I have generated a sitemap.xml file for my new website.
It has one root url and 9 products url.

I have added robots.txt file with the following content (changed actual url of sitemap):

User-agent: *
Allow: /


I submitted sitemap.xml file to webmaster tool on 15th of February.
After three days, I can see all 10 urls are marked excluded in coverage:
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My site is still not appearing on google what can be the reason of it?