The system we have in place that automatically levels PBE accounts to 30 isn't working at the moment.
We're investigating this at the moment so hang in there. If this isn't solved before the next Team Builder test, we'll try to manually set every account to 30 so don't worry, you'll be able to participate when Team Builder comes back.
@RiotBlackrook for questions
Edit: IP/RP are still working as intended as far as I know. Those features always take awhile to kick in and you tend to have to re log in and out to see it. I'm also working on something that will make this kick in much faster (hopefully as soon as you click on the store for the first time) and without logging out and back in.