When using DepositFix form to process payments, we strongly recommend not to use HubSpot Captcha, for the following reasons:
1. HubSpot Captcha does not integrate well when submitting forms via HubSpot API (which is what we use to send payments).
2. It adds a LOT of friction, especially on the last payment step. There is also almost no practical reason to add it, as the credit card field already serves as pretty high protection from bots.
3. If you are concerned about fraudulent payments, You can use DepositFix ReCaptcha from your DepositFix account. Furthermore, Stripe already has very good algorithms and processes in place, to reject fraud and suspicious transactions right away.