Rotating profile Issue ( already solved, thank lord T.T )

For those wondering what I’m talking about,

I have a problem with my profile  recently  & that problem Is the images themselves aren’t working properly.

one image ( my purple one ) is shrunk & the png file for some reason doesn’t work which is making the background black.

my other image ( the orange one I made ) had grown within size then the other on my profile even though it’s similar size to the purple image.

So anyone out there that might know how to fix it give me suggestions on how I can fix them? The website I used to make my rotating profile is:

randimg.net