Customer accounts are a core feature of Shopify and are not theme specific
In your store admin click on Settings > Checkout
In here you will see the customer account options to enable these and make them mandatory if needed.
Your theme will then show the customer accounts options at the top of your site.
Note We can not offer individual theme modifications, however are happy to advise on the best Shopify resources and finding developers to work on your theme.
Want to customize your theme?
- Hey Carson small tweaks
- Expertly.help Tweaks & SEO solutions
- Task Husky ecommerce tweaks
- Shopify experts
- Updating your theme