Watch

Are there any features that do not work as expected in Maps?

If your Apple Watch 2nd Gen has watchOS 6 installed, at least these should work:

Find places and explore with Apple Watch - Apple Support

Znajdowanie i odkrywanie miejsc przy użyciu Apple Watch - Wsparcie Apple (PL)

Get directions on Apple Watch - Apple Support

Uzyskiwanie tras dojścia lub dojazdu na Apple Watch - Wsparcie Apple (PL)

Use Apple Watch to get directions or contact a friend - Apple Support

Używanie Apple Watch do wyznaczania trasy do znajomego lub kontaktowania się z nim - Wsparcie Apple (PL)

Is this about the Wallet App on your Apple Watch or the Maps App?

Did you already update your iPhone to iso 18.3?