Trial days were added on both Pro Sites and Stripe ( x2 trial days for the user)

When I put in 14 days on "Free trial" days, it allows the user to go Pro trial.

When he upgrades 14 days later (on expiry), another 14 days is added to the Stripe invoice giving him 28 total free days.

I had the Stripe Plan set with 0 trial days. Thoughts?