Please note that I will no longer watch this topic (muted), as I don’t like to get alarmed by e-mails.
I simply do not have the capacity to support e-paper use on more than one environment.
Use the Arduino Forum Display for any question concerning my libraries, and I will try to answer there. https://forum.arduino.cc/index.php?topic=487007.new#new
I don't think he actually meant he'd stop working on it, he's just not actively monitoring this thread anymore.
Instead he invites people to tag him on the Arduino forum instead - and I suppost he'll still monitor his GitHub repo
Yes, I just only randomly take a look at this thread. I also have disabled issues on all my GitHub repositories, as they were also used for asking questions, ignoring my issue template.
GxEPD2 should be usable also for Particle. There is an example for Particle in the extras folder on GitHub.
I will publish GxEPD2 for Particle from time to time, but you can also just upload GxEPD2 as a private library (delete the examples folder first, and replace it with the example folder from extras/Particle).