Q: Want to reset photo stream on Icould, but can't due to a server error

I wanted to free up space and stop the hundreds of pictures from automatically transferring to my moblie devies, so I thought I'll go ahead and reset photo stream, but I when I try to, I keep getting this error:

"Could not reset your photo stream."

Your photo stream could not be reset at this time due to a server error.

Try again later."

Just wondering if anyone knows why this problem is happening? and how I can (if possible) go about fixing it?

Thanks,