I'm not a TF Admin, but I can tell you that overlaying a route and a ridelog at the same time is not a feature available on TF. If you want to see where you went wrong then try this: open two tabs on your internet browser, then open TF on both. Then look at the Ridelog on one tab and the Route you created on the other. Trace the path until you see it diverge.
Or - if you know the route well enough - just review your Ridelog and see where you went off the trail you meant to say on. Hope that helps.