Alright @Jeraz101 ,
From your namecheap dashboard, select domains and click on the domain you have issue with.
Go to Advanced DNS
under records where you have
type: A
host: [email removed]
and the Shopify IP address.
change it from A to CNAME
leave [email removed] as it is
then change the IP to your-store.myshopify.com
then save, after some minutes it’ll update.
NB: “your-store.myshopify.com” is your Shopify alias address you can get that from Domains in Shopify settings.