there isn't a need to prove insurance this year as there is no penalty for not having it; that is different than 2018.
but if you had marketplace coverage, there is a need to 'settle up' on the premium credit to determine whether any of it is owed back to the federal government. what is the specific statement saying you will be charged for not having coverage from August forward?
I assume you are trying to complete 2019 taxes and not 2018, right?
