Got it. I only asked about the Android app triggers page as this looked like a symptom of that issue, plus you had mentioned you didn't have a PC available earlier in the thread. I see now that you do.
I wonder if you could run a test, since I am seeing triggers working on devices in my test setup. The purpose here is to eliminate any potential wiring or device issues, keep the whole test inside of Cayenne. On the web, can you create 2 Light Switch widgets from Add New > Device/Widget > Actuators > Light > Light Switch? They don't need to be connected to any sort of real-world device, just pick two unused digital pins on your Raspberry Pi.
Once they are created, make a trigger: if Light Switch A is ON, then turn Light Switch B ON. Save it, then turn A on. If B switches to ON, then it establishes at least for a simple case, you can run triggers coupled with devices. Then we can start looking at your specific triggers/widgets/wiring for the issue. If B never comes ON, I would be interested in your account login for investigation. Only if you are comfortable, and shared privately, of course.