Welcome to the forum, you will certainly succeed in creating routes in MRA. You have a TomTom, I read, use the TomTom map (if you have a Gold license).
When creating a route, it is important that you put the route points on the road, zoom in completely on the route point.
If you have any questions, there is an English section on the forum, where you can go with all your questions. https://forum.myrouteapp.com/category/11/en-forum-self-service
Suc6 planning your routes! Enjoy.