MDA is slow catching up on all the requirements. They will place a certain number of credits you have to have each year to keep your certification up to date.
I'm sure there will be some training/courses offered thru MDA throughout the year to get enough credits to maintain your certification.
I know with my MDA Ag Nutrient Manangement Cert they always give you plenty of opportunities to get the credits you need to stay current.
There is a business license fee that they are working on now for those that own a business applying fertilizer.
It sounds like the pest license where you have one cert that has just your name and one cert with your business name. A fee for each one.