Sometimes, the official website might be experiencing heavy traffic, especially right after the admit cards are released. This can cause errors or make the website slow to respond. A slow internet connection on your end can also prevent the admit card from downloading properly. In some cases, browser extensions like ad-blockers might interfere with the download process. It's also possible that you might be entering the wrong application number, password, or security pin.

Here are a few things you can try to fix this issue. First, double-check that you are entering your NEET application number, password, and the security pin correctly. It might be helpful to copy and paste these details directly from your registration confirmation if you have it. If the website is slow, try refreshing the page or try downloading it again after some time, perhaps during off-peak hours like late at night or early morning.

Try using a different web browser like Google Chrome or Mozilla Firefox. Also, clear your current browser's cache and cookies or try downloading the admit card in incognito or private browsing mode. If you have any browser extensions enabled, especially ad-blockers or VPNs, try temporarily disabling them and then attempt to download the admit card again. Ensure that you have a stable and good-speed internet connection. Avoid using mobile data hotspots if possible and prefer a broadband or Wi-Fi connection. If you've tried all of this and still can't download the admit card, try using a different device like another computer or a mobile phone.

If none of these steps work, it's important to contact the National Testing Agency (NTA) for help. You can reach them through their helpline numbers: 011-40759000 or 011-69227700. You can also send them an email at neet@nta.ac.in. They should be able to assist you with the issue. Remember to keep trying and don't panic. There's still time before the exam, and the NTA will likely help you resolve this.

I hope this helps.