Free Traffic Legal Advice

Hi, pleading for any advice. I got a gift of new privates plates a few weeks ago. Fast forward I never got round to telling insurance and I’ve been stopped by police for having no insurance. Thing is they checked both plates and no insurance was found. They let me go with a notice to take within 7 days to the station with proof of insurance. I have changed the new reg over now. Also have proof of policy with both registration played. What do I do now I can’t lose my licence 😞