Solved! Go to Solution.
Technology is a constantly evolving industry and standards change periodically for various reasons. I'm not sure the reasoning behind this change but it's one of those things you have to adapt to in order to survive in today's online world unfortunately.
Once your issue is resolved,
please be sure to come back and click accept for the solution
Thanks for the reply. But supervisor from go daddy replied me that you got add to cart option for the last 6 months by luck. From when these educated people are working by luck?