Ok, its working (somehow). Hopefully will keep on. Please lock this thread.
I know that it updates every 4 hours. I said in my question that it does change, but then I'm not able to put the cape on. And then later it...
No it doesn't work. All it does is say 'Setting your cape...' and 'Your cape has been updated!'
Yes, many times actually. But I'll try it right now again.
The cape I bought has been really glitching me out (skin not changing and when it does I can't put my cape on) (ONLY ON MV it changes everywhere...