Tobi okafor

I’ve had TapeACall for over four years. I paid for the premium service and at the time it was a one time payment. I tried logging in today and I’m being asked for a subscription fee. I don’t understand why they would change the condition of my subscription after I’ve been with them for so many years. What they should do is charge new subscribers with an annual fee but grandfather older members with the initial one time payment they offered.