I encountered a problem where the plastic faceplate wouldn't come off as easy as the YouTube videos made it seem. It turns out, my version of dryer was rare as it was only manufactured for a short period of time so no online materials were available.
I turned to LG's support team. Their solution was to send me the Google search result for "How to repair LG thermistor" (or similar basic query). When I pressed further for the service manual for my model, they defaulted to trying to route me to a service center because the work could be dangerous. They refused to offer any support which would allow me to work on the dryer myself.
I'm not saying they shouldn't have this policy in place. But as an electrical engineer who's designed products and installed home automation systems in the past, it was incredibly frustrating.