It sounds like you're seeing an error message about your National Insurance number already being in use when you try to log in to Jarvis. This is usually because you already have a Jarvis account linked to a different email address.This might be because:
You created an account before: You may have set up a Jarvis account in the past using another email address.
Your employer created an account: Your employer might have already registered you on Jarvis.
To get back into your account:
Please get in touch with our support team at [email protected] and let them know you're seeing this error message. They'll be able to help you figure out which email address is linked to your account so you can log in.