"Photon Offline"

This project has been working great for months now! No changes and yet yesterday I found that the board was offline. I checked the circuitry and nothing is wrong. Next, I attempted to refresh the token, flash the code again - with a successful flash - and, after some frustration, loaded the tinker firmware onto the board to check if it was Blynk or the hardware. Success! The Tinker app worked; now, wondering what is wrong I have come to you, the Blynk support team, and seek to find a solution. I am using the latest library and the Particle Build IDE. What can I do to fix this?

Please follow these steps: