Skin import error: valid 64x64 and 128x128 not accepted

I tried to import my 128x128 skin on my Lenovo IdeaTab Pro but it work, I tried several times in different skins from valid apps like skinseed. But it kept telling me that it's not valid. I'm currently using 1.21.72 Minecraft version.

Steps to reproduce:

• Open Minecraft > profile

• Tap “Edit character” > “import” > “Choose new skin”

• Select valid PNG file from Ex File manager

• Error appears : “Please import a .png file with dimensions 64x64 or 64x32 or 128x128”

Expected result: Minecraft PE should accept valid skin files

Actual result: Error persists even with correct skin files.