Hello Olga,
1. that issues are on your end. The two files are from xstore and wprocket do not strip the query strings. Can you please fix that? Only that 2 files.
2. Can you load the font awesome maybe in another way? WP Rocket don’t optimize the font the way you added it.
3. I optimized my images with such a program. That’s not the point. The point is the resizing issue…
Looking forward to hearing from you!