It sounds like you choose the option for "ObamaCare Plan" on the screen for "What type of plan were you enrolled in?" - if you received a Form 1095B, then you would not want to select this option.
Do you know what type of insurance you had? If you had insurance through a job or a state Medicaid program, then you would have wanted to answer "No" to the question "Was anyone enrolled in any of these less common plans in 2018?"