This is incorrect. WARP is the VPN, WARP+ is a series of routing enhancements designed to improve performance. Sorry for the confusion, clearly we need to explain it better.
edit: read your other comments and see this is (in some circumstances) intended behavior. I don't think you should claim WARP is a VPN if you aren't offering privacy from the endpoint. Perhaps the app should say "your browsing traffic is now private" rather than "your internet is private."