Have you been trying to log in directly with your Stripe or PayPal account credentials? Control is a 3rd party partner of Stripe and PayPal so if you want to manage your businesses with Control, you will need to create a Control account first.
You may sign up directly in the Mobile app login screen, or on our website http://controlboard.getcontrol.co/signup
Once your Control account is created, you can then connect it to your Stripe or PayPal account.
If you believe you already have a Control account, please reset your password here https://controlboard.getcontrol.co/reset-password, or contact us at firstname.lastname@example.org.