Route Doesn’t Make Sense

Hi! We are planning a long drive through Canada - specifically from Regina to Orillia Ontario. We know it is possible to do this without crossing the border, but no matter what we do it tries to make us drive through the US or says it can’t calculate the route. The issue seems to be somewhere between Nipigon and Orillia. It does this with both our EVs. We have planned out our route manually but it would be great to have it fixed - thanks!