why am i unable to make a payment evn aftr entering card number asking me to enter card number

Dear Fahin, you haven't mentioned which entrance examination are you enquiring about. But if this is regarding PGIMER, candidates have been facing this issue as this application form has been due for some time and Candidates have been waiting for the official notification. There might be traffic to the website. Please clear the cache, browsing history, passwords, restart the system and try again. Alternatively, also try either during the early hours or late hours when there is slightly little traffic. Also make sure you save any transaction details if the payment goes through.