SATNAV solution for FLUTTER

Hello

We have delivery app created by FLUTTER. We are currently in need to integrate 3rd party SATNAV.

1. We have tried MapBox for Flutter (solution from github) but no luck. Once we run this it closes our app, we dont see any errors

2. We tried to use Google Map but their Satnav is only for selected business (with large turnover) so we cannot use this.

We are looking for developer who has a good experience with FLUTTER and SATNAV. Our aim is to make the satnav working for our employees drivers. Our routes are mostly with 2 stops: Driver position > Store with package > Delivery address.

You should have:
1. Experience with FLUTTER
2. Experience with Mapbox or any other SATNAV you can use.

SATNAV MUST:
1. Be working with 2 points
2. Show current traffic
3. Must work in UK (no other countries required)

Contact me directly for questions or discussions.