If you have already made a deposit on your account, then you are no longer eligible for a welcome bonus or a first deposit bonus. As the name says, it's a bonus you can activate the first time you make a deposit. If you don't, it's gone. Most casinos have several deposit bonuses form the total welcome package. In case you didn't claim a bonus with your first deposit, you might do it with the second, third, etc. But as you can see from Cloudbet's reply, this casino uses a different system, without traditional deposit bonuses.