I started an RMA for my 1TB OLED Limited Edition on Sunday for a stuck/dead pixel but didn’t include a picture.
Valve got back to me and asked for one, and now I’m waiting for them to get back to me again.
Save yourself some time, include a picture of the problem when submitting an RMA.
Honestly this goes for any customer service ticket. The more information the better. Generally when I message support I have screenshot or picture evidence, and I run through the troubleshooting steps I’ve tried and the results of those steps. Gives them as much information as possible to work with so they can figure out the issue or solution easier.