Problems with Free Trial payment gateway, Stripe Pop Up

Hello, I have added a free trial to my main membership.

In my testing singing up to a membership with a trial asked for credit card details, but right now users are signing up without entering card details.

Inspecting their M2Pro accounts shows that the gateway is “Free Gateway” instead of Stripe.

What is REALLY weird is that some users ARE in stripe and correctly have a Stripe trial membership, but only 4 out of like 30 people.