Nameservers not working

Ok guys my default nameservers arent working. I host my domain threw namecheap.com and I have ec2 instances from aws. and for some reason my website arent connecting when I use them on my clients websites. I have to go in and edit the advanced DNS to point to my IP address. Which I do not want to do so is there anyway that we can get this name server working

Happy New Year @cynclabs

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