Hi Bunnie,
I tried your route and I get exactly the same thing as you on my TT Rider 550.
For some reason it just dosn't want to let you turn left into "Koppenhoefstraat".
I can only presume that there is a difference between the TT Mydrive Map and the current version of the Map in the TT Rider 550.
Using streetview at that junction does show that you can turn left there but that could have been recorded a couple of years ago.
Maybe there has been changes since the Streetview was recorded.
Lovely looking place by the way.

And just to throw another option into the mix regarding ReLive, the full Ordinance Survey Web App (Paid Subscriction Required) (Not available in the mobile Apps) has a “Fly Through” option that tracks any route of any length. Not just Green Lanes however, as you can import any GPX file into the Web App and it will give distance and elevation data for the whole route as it tracks the journey.
Doesn’t automatically generate a video though but using “Request Desktop” I can record it on my iPad Pro.
Example by OS Maps

Obviously this is UK Only and unfortunately terms of conditions dictate that you are not allowed to Screen Capture the Fly Through.

I would happily pay a subscription for similar functionality in MRA.

Having used Google to translate the screenshot I am so exited for the “onverharde wegen” option.
That will never ever ever be ticked by me to avoid.

Can’t wait to get my hands on that.

Brilliant and thank you.

Steve.