That did it! I had to uninstall, reboot and reinstall and it is working properly now! Thanks for your help!Works fine for me on iOS 13.3.1. Maybe try uninstalling and reinstalling. I’ve had that fix other iOS app issues.
SameJust tried mine on my iPhone 6 and its working fine. Its now called "Boating" rather than Navionics.
It was a software bug ( Feb 29 ). This is the reason why I installed both navionics and aquamap on my ipadMy IPad was acting up yesterday like that would not stay open but it worked fine today.
Nick