I successfully used Hike2+ as recently as last August. But this season, the app never gets any GPS data. I have the latest version installed on my watch (A Garmin Forerunner 55). GPS does work with other apps, like the builtin ones. But Hike2+ never records my path, never updates my altitude after a session starts, inaccurately records my distance, and never displays my heading. When I start the app, it displays "GPS Q: None", which is suspicious. And '"Menu" for Startup Options'. But there is no "Menu" button on this watch. On my phone's ConnectIQ app I can adjust settings like "Lat/Lon Format" but there isn't anything GPS-related.
Where is this mysterious "Menu", and how can I make GPS work again?