Gif won't work as avatar?

[Grimsley-San]

I can't seem to get it to work,

I try to upload my new avatar to this.

[Circuitous]

Avatars are limited to 160x64 pixels and 48.8kb. If your GIF exceeds these dimensions it will still upload, but will be resized by the forum software, which will also remove all animation.

So basically you need to crop it down to 160x64 or smaller and try again.