Valid Skin can't be imported

My device is a HuaweiPad, and I am using Minecraft Bedrock Stable version 26.52. When I try to import a custom skin in PNG format, Minecraft rejects it and displays an error message stating that the skin dimensions are incorrect.

I have already tried using valid PNG skin files in both 64×64 and 128×128 resolutions, but neither works. The issue persists even though the files appear to meet the expected skin dimension requirements.

Additionally, I use the built-in Files/File Manager app to select my skin, but Minecraft does not provide an option to choose another application to open the file.

Could you please investigate this issue and provide a solution? I would appreciate it if you could clarify whether this is a known bug in version 26.52 or a compatibility issue with Android devices.