I am a teacher and I’ve always used Particle Photon with my students for many years and many projects with the Free Plan, and suddenly this message (picture) appears to my students:
First, thank you for the continued use of the Particle platform!
Second, it seems you may be using more data than you previously have and why this is occuring. Depending on your firmware, this may be able to be adjusted. I recommend visiting: Introduction | Tutorials | Particle.