No Power to Ring Doorbell Pro

I have set up my Ring Doorbell Pro with the NICOR PRCP2 by bypassing the power kit as suggested in other posts. The Ring was initially working, but now it says there is no power to the doorbell.
It still makes sound on the ring itself as well as in the house when I ring the doorbell; although, now it rings about 30 seconds after pressing.

Hi @user73707. Try giving your Doorbell a reboot by pressing and holding the setup button on it for 20–25 seconds. If it does not help, power cycle your Doorbell by shutting the power off to it for a few minutes and then powering it back on. If you have tried these steps and are still having the same concern, give our support team a call for further assistance.