You get so many people whining about this free game how about a THANK YOU :) This looks pretty well polished, and you seem to be actively engaged in keeping it interesting. Keep it up.
vexus69 that's probably because only certain types of armor or weapons should be available for use on certain character types. if you've played the original WoW you'd know that warriors wear metal armor, and weild swords, while mages/priests wear cloth armor, and weild staves.
it depends on your class, i just don't think the developer made it so that incompatible armor won't equip.