Cpt attempts

I am not aware of the recent rules and regulations about ICAI around CPT. So thought its the best place to ask question. Just want to know that is there any limit on the maximum attempts for CPT exam after paying CPT registration fees. I think its 2 attempts if I am not wrong. And what if its not cleared in 2 attempts, is the student required to pay the registration fees again ?

Thanks in advance for help.