Hey, man, we are on the same boat!
Got my DM on March 13, never received PPR since then. Let's keep in touch and keep each other updated. It is nothing you can change now, my only worry is that they might have sent the e-mail but it never came.. In that case, you only have a month to send your documents to them. And if you don't, they might decline the application. But im sure it's going to be OK.