"Choose New Skin" only ends up showing the first ever chosen skin

I got my free version of Bedrock Edition after checking my Mojang profile. Having done so, I selected a custom skin for my player character from my files via "Choose New Skin." Having chosen one I didn't want, I went to choose another through "Choose New Skin." While I chose a different png, the "choose the correct model type for your skin" window and resulting skin preview on the right side of the skin menu as well as in-game skin remain as the first skin I had chosen. I can't switch what "custom skin" I use. I can switch to "Steve" or "Alex," but cannot use a different custom skin.