Snippets Expand by Tab not working

When I type `html-`\+ `tab` nothing happens. I've gone over my settings, i don't see anything wrong. I'm new to atom, so it may be something I'm missing, but it seems pretty self-explanatory. I cannot get any of the snippets from this package to work. I've disabled, uninstalled, reinstalled, restarted Atom. I can't seem to get this working.

Any help appreciated. Thanks.