FZT bonuses work fine. The cause of the problem was due to a recent hardfork. If the recipient address does not have a public key then FZT bonuses do not work and neither do manual payments.
So everyone, please make sure to get a public key set for your Signa address. It makes sending to you possible and increases the security of your address so it cannot be hacked! You can see if you have a public key in the Signum explorer. If you do not have one, simply make an outgoing transaction to someone or activate the address.