We wouldn't blame you for thinking PayPal's app has lost focus -- it seems more interested in investments and ordering food than on... well, paying people. It's a good thing the company is cleaning things up with a redesigned mobile app, then. The new version is a return to the basics of sending and receiving money, with the optional features shunted to a "more" menu. The home screen now focuses on notification cards (such as alerts when you've received funds) and includes a list of recently paid people and businesses in order to speed up your most common payments. Think of it like Instagram's Stories carousel, only here you're paying friends for your share of last night's pizza.
You may have to wait a while before you can try the new experience. It's available now for Android users in a few countries, including Australia and Italy, but you won't see it reach iOS or countries like the US until sometime in the "coming weeks." It might be worth the delay, though, if it helps you settle your debts (or top up your bank account) that much sooner.