I turned to the support site, they sent me this:
Thank you for your email. Your free trial memberships to www.XXXHDVault.com, www.PremiumPornHD .com and the Premier Passport on www.Free-Adult-Games.com are cancelled.
Please note that a pre-authorization was made for the free trial membership on Mar 11 2019 for the amount of $39.95. A pre-authorization is a temporary hold and not an actual charge.
Your free trial membership is cancelled and the pre-authorization or temporary hold made for the free trial will automatically be released back into your account . Pre-authorization are usually released within 2-10 business days. However, the actual length depends on when your bank or credit card company releases the hold. For more information regarding pre-authorization, please contact your bank or credit card company.
This email is a confirmation of your account being cancelled. You will not receive any future emails or notifications from us in regards to your account