tnvelaivaaippu.gov.in review: Not able to update my degree

Sir/Madam,
My name is G.SURESH
USER ID : CHD2006M00000082
When i was trying to add my degree qualification...
It shows validate as "Please enter the CASTE"..
But that field is not visible that is disabled...
PLEASE LOOK AT MY CASTE AND CHANGE IN IT FROM YOUR END...
Community : SC
Caste : ADI DRAVIDA
Thanking you sir/madam...