Yes, users can use their wallet balance to purchase products from your site.

Created account with username standalonetech

We checked your website and it seems like there is some issue on your site because adding to cart any product is not working. Could you please create a test admin access and share with us? so that we can check this on your site.

Please check if there is any PHP error and let us know.

There will be a checkbox in the subscription product if you enable that the product will be use for wallet recharge. Regarding the payment, we will share a payment link. Please let us know.