Subscription renewal

I cannot renew my subscription i do not mean start again. Play store stops me i have been trying for 3 days before my subscription finished .Web site upgrade nothing else

I am sorry to hear that. Please double check your payment info in the Play store. Typically there is some issue like an outdated credit card. See: https://play.google.com/store/paymentmethods

As I had said I want to renew not pay full I.e 17£

As far as I understand your subscription payment is still pending. In order to renew you need to provide a valid payment method to Google Play. Since we don’t know what Google is doing, you might want to contact Google support. If you can’t find a solution, we can look into alternative options, please let us know if the issue can’t be resolved through Google.