Hi Hee,
Q1
No, for now can not integrate with the google openid
Q3
Open the autogenerated.xml, you can find the section below. The operator will show what you set in this section.
<resource name="MySupportPanel.RatingLevel0">Not Rated</resource>
<resource name="MySupportPanel.RatingLevel5">Very Good</resource>
<resource name="MySupportPanel.RatingLevel4">Good</resource>
<resource name="MySupportPanel.RatingLevel3">Normal</resource>
<resource name="MySupportPanel.RatingLevel2">Bad</resource>
<resource name="MySupportPanel.RatingLevel1">Very Bad</resource>
Regards,
Ken