Stream2Sea has partnered with Flex to allow customers to use their Health Savings Account (HSA) or Flexible Spending Account (FSA) for eligible purchases. This enables customers to pay with pre-tax dollars, which can result in estimated savings of 30–40% depending on their tax bracket. (docs.withflex.com)

1. Add eligible Stream2Sea products to your cart as usual.
2. At checkout, select “Flex | Pay with HSA/FSA” as the payment method.
3. Enter your HSA or FSA debit card details.
4. Complete the checkout process normally.
   

If the Flex option does not appear, you may be logged into Shop Pay. In that case, choose “Checkout as guest” or use an incognito/private browser window to access additional payment methods. (docs.withflex.com)

You can still select “Flex | Pay with HSA/FSA” during checkout. Instead of your HSA/FSA card, enter a regular credit or debit card.

After purchase, Flex will email you:

• An itemized receipt
  
• A Letter of Medical Necessity (if required)
  

These documents can then be submitted to your HSA/FSA administrator for reimbursement. (docs.withflex.com)

For Shopify stores like Stream2Sea, this usually happens because Shop Pay is enabled or the customer is logged into Shop Pay.

Recommended solutions:

• Log out of Shop Pay
• Use an incognito/private browser window
• Select “Checkout as guest” during checkout
  

These steps should display additional payment methods, including Flex. (docs.withflex.com)

HSA/FSA cards function like debit cards. The most common reason for a declined transaction is insufficient funds in the account.

Customers should contact their HSA/FSA administrator to:

• Confirm their available balance
  
• Verify the purchase is eligible under their plan rules. (docs.withflex.com)
  

Customers should forward the request from their FSA provider to the support team. Flex can work with the provider to issue updated or additional documentation when possible. (docs.withflex.com)

Recommended steps:

1. Check the spam or junk folder.
   
2. Search for emails from notifications@withflex.com.
   
3. If still not received, contact support@withflex.com and provide the email address used during checkout. (docs.withflex.com)

No. Flex currently does not support splitting a transaction across multiple HSA/FSA cards.

If one account does not have enough funds:

• Customers can complete the purchase using a regular credit card
  
• Then submit the Flex documentation for reimbursement afterward. (docs.withflex.com)

This can happen due to adjustments, tax allocation, or split-cart processing.

Customers should contact support so the charges can be reviewed and any necessary refund or clarification can be provided. (docs.withflex.com)

Yes. Sales tax for eligible items is also covered by HSA/FSA funds.

For split-cart purchases containing both eligible and non-eligible items:

• Taxes are divided proportionally between payment methods based on item eligibility. (docs.withflex.com)