Lightsail DNS not working.

Hi, My site kitchenathoskins.com was up and running for more than a year with out any problem in light sail. Last two days it was down because of DNS failure. Yesterday I was able to bring it back up by creating a new static ip address. But it was slow. So I deleted the DNS zone and static ip and created a new. Its been hard down ever since. I updated the name servers in my Route 53 as well. But nothing seems to be working. pl. help.