Hi @Aries, I assume you're talking about the rewards from The Foundation since you've mentioned "character level". None of them (aside from forum titles) can be claimed because the systems supporting them haven't been implemented yet. This includes the pet companion system, the equipment skinning system and the mount system.
Most cosmetic systems will be implemented later on (beta or even full release) since gameplay has higher priority. Pet companions may be an exception and get live during Alpha, but it's not guaranteed.
I understand it can be a bit annoying, but it's common for crowdfunded game in early stages of development and it's been stated multiple times since The Foundation has been launched.