Hello, Hans,
Thank you for choosing XStore as your WooCommerce WordPress theme.
In order to enable the “Register” option on the My Account page, please navigate to Dashboard > WooCommerce > Settings > Accounts & Privacy and select the option to “Allow customers to create an account on the “My Account” page”. Please refer to the attached image for a better reference.https://postimg.cc/svgd48TX
Read more about settings – https://docs.woocommerce.com/document/configuring-woocommerce-settings/#accounts-and-privacy-settings
If you have any additional questions or concerns, please do not hesitate to reach out to us.
Kind Regards,
8theme team