This happened because you had an account that was blocked from asking questions, and returned after requesting deletion of your account, which we obliged.
We're happy to give you an almost clean slate, but we must also protect the quality of the resource that we're building. To this, we just ask that as you start off again, you treat questions as a consumable resource that can in fact be depleted. Doing this might have saved you from the automatic block that you encountered previously.
The good news is, it only takes a few good questions and answers to have this restriction lifted. Ask questions only when you really need to, and make them count when you do. This restriction is not nearly as difficult to work out of as the previous one that you encountered, it's there just to slow you down so you really put some effort into your posts. There's also no mechanism to lift it, other than establishing yourself as a user. Even a developer can't lift this, it's hard-coded.
This went out in a recent change that aimed to prevent users from circumventing system restrictions (automated blocks, moderator issued suspensions, etc) by simply requesting deletion and then returning. We had to do something about that as part of our work to make sure the perceived quality of the site remains high.
This change is active on all sites where automated post blocks are enabled.
This does not affect your ability to answer questions, and you could conceivably lift this restriction in a matter of days if you so choose.