Done, previous name "mandingo17"
Avatar size cannot be edited. That is posted on the stickies of this section. You received an increase when made donor. You just need to upload a picture that actually meets that size. .GIFs do not work if their size (be it by H/W or actual file size) is higher than your allowed limits. IE if the .GIF is 300x300 and only 150kb it will still not work because you exceeded the dimensions. Also if the .GIF is say 150x100 but 3.50Mb it will also not work. You must use something = or < your limits. As far as for my size, that is an upper staff Benefit, adjusted by the site owner to our individual user groups.