very odd. I tested a few of my routes, and there were were a couple that changed by around 0.5km. Otherwise OK.
If you can share your route we might be able to help see what is causing the issue.

@MyZ51 yes but you have to use the pdf export and then print that

@Jem-Cotton hi Jem
The webplanner will have major reconstruction during this year but since that means a ton of work, be patiënt