Won't let me use my own skin

My skin is fine and I can use it on the previous version of Minecraft but maybe it's just the device but possibly the new update thing. Is says (please import the .png file of dimensions 64x64, 64x32 or 128x128.

My file is 128x128

I redownloaded the app and restarted it and my phone, tried multiple skins but it won't work