How to enable re-schedule option again

I have rescheduled the visa appointment multiple times and it seems like I have maxed out the reschedule limit. I would like to pay the fees and re-enable the reschedule appointment again. But, I don’t see any option of paying the fee again. How can I re-enable the reschedule appointment without cancelling the existing one.

Other option is to create another account to pay the fees again to have to booking option.

Please advise.

thanks,
Shantanu