Need to have all requirements for Google setuped well...
- a page hosted at your site with Privacy, rules for your app
- a page with needed permissions for your app
First time i ve created them, took them about 30days to check... also they asked me to change some things... and took another week...
in Google seems they are working... Like greek gov "public services"... I am thinking if they are part of it...
ps: Have in mind also... if something need some extra restricted permission... you must inform... why you need it... and where it helps the end user !