Freeze Plus is an option to use on your account when you want to use your prepaid (un-used) sessions. All you do is pay a $10 fee (I know, right- another fee!) and you can use those sessions without paying $60 a month. They are supposed to offer this to you if have 5+ sessions and they believe you are at-risk for cancelling your membership.
Keep in mind that this information is probably not even known to many clinics yet as the company is still rolling it out. This shift in policy is stemming from the result of the lawsuit.
Their execution of this is dodgy and is likely to result in billing errors since they have to write down when they will charge your card the $10 fee. It’s not an automatic charge that replaces your current billing (even if they tell you it is). The software they use isn’t capable of swapping out the normal monthly charge with the $10.00 fee so they will use a retail product code called “Freeze Plus”.