After you enable the ACH add-on feature, your customers need to connect their bank account to their customer portal before they can pay via ACH.

Add Bank Account Details

Adding bank account details can happen in two ways:

1) Your customer needs to connect their bank account to their customer portal
(This is the preferred method)

Please ask your customer to visit their client portal and click "My Profile."

For the system to allow your customer to add their bank information, they will need to set up their login info if they have not done so.
They must change the "Login Required?" to yes and enter their preferred login information.

Once they have done that, they will then be able to click the "Connect Bank Account for ACH" button.

They will search for their bank and then be asked to login into their bank account.

Once the customer has logged in to their bank account and given access to link it, the bank account should be connected.

They will get a success message.

They will need to select the box to allow you to charge their bank account.

You will not see their bank linked if they do not have this box checked.

Once the bank account is linked and the box is checked, you will see the customer's bank is linked on their customer profile, and it will now be an option when paying invoices.

2.) If your customer cannot add their bank account, you can also add it for them.

This requires the customer to wait for two small amounts to be deposited into their bank account. Then, they will need to enter those two amounts in their customer portal to verify the bank account.