Flash Player stopped working in Firefox?

Question

Browsers

About a month ago, the .swf files downloaded to the computer in 32-bit Firelis v55.0.3 suddenly stopped working. After opening, a completely blank white screen is visible. Reinstalling the flash player and setting it up inside the firelis in the "plugins" did not give anything. Starting firelis in safe mode with all plugins disabled didn't help. At the same time, flash drives run smoothly in Opera 47.0 and do not even try in Chrome 61.0. What could it be?

Answer 1

And thank God