Early this year, I bought a Creality Space Pi filament dryer and the display is VERY dim. So dim that I have to turn off the overhead lights in the room in order to see the display. I thought it was an isolated issue until I just received 2 more of the Space Pi filament dryers. They have the EXACT SAME ISSUE. So now I have THREE dryers that are almost useless to me. Is there a way to adjust the brightness of the displays, or do I just need to cut my losses and buy different brand dryers ?