I tried 3 times for paying counseling fee for apicet but it is unsuccessful

Dear Thanuja, with too many Candidates trying to make their payments at the same time, may be the server is down. Please make sure ypu have cleared the cache, browsing history, etc. Also try restarting your system and try logging in and making the payment again. Or try changing the system and make the payment from a different device. Also check if the website you are using is: https://apicet.nic.in