You do not need a personal Gymcatch account before registering a business account. However, if you do have a personal account that you wish to link to your business account, then please enter the correct email address and password for this personal account during the business registration process.
Once you click the Get started button at the bottom of the registration page, you'll then be presented with an Existing account pop-up where you'll just need to click Continue to complete your business account registration.