Actually when you go for certificate verification of ts EAMCET 

They will provide the registration number and also .

They will store your data during your counselling .

You will get registration number .

Now you have to pay processing fee and start online choice filling .

Look for the e mail with which you have registered on the site for the form filling and application processing. There you may get the link of help desk also where you can report your problem and you will get your issue resolved. Mail them about the particular and you'll be having a solution.