PFP has not been working at all!

My profile picture has not been working for the past few days or so, and I changed it many times, and it hadn't worked. I cleared my cookies, also didn't work! I even emailed the support and they didn't respond in like? I dunno, 4 or 5 days? I dunno, if anyone knows how to fix this or how to code in my PFP, that'd be nice