Feedback needed for Sendela

Hello guys.
I created a simple website for my idea and need feedback.

www.sendela.com

Sendela is a service where you can send or get gifts with a username. Your followers can send gifts to you without your address information but just your sendela username. It is like a address book but senders can't see your information.
I don't know that is there any website similiar with it.
I think popular accounts on social media can get gifts from their followers with this method. Celebrities, influencers, etc... Or you can get a gift from your secret fan :)

Any opinions, suggestions or critisims are welcome. Especially about promoting it.

P.S. Website is just for idea validation. You can sign up. But you can't send a gift.