1) Log in to your admin account at BigCommerce
2) Go to Server Settings › DNS Records
3) Click on the Web Hosts tab.
4) Scroll down to the blank fields at the bottom of the list.
5) Begin creating the DNS record by selecting a CNAME from the Type drop down menu
6) for the first empty field type in the subdomain you wish to use including your domain e.g. (insta.yourdomain.com or instashop.yourdomain.com )
7) In the "is an alias of" field, type in like2have.it
8) click Add.
After this is complete you can go back to your Like2Have.it Dashboard and add your Custom URL: https://like2have.it/admin/settings/gallery-url
It would be entered how you want people to type it in:
If at any point you require some assistance, please don't hesitate to contact us.