Hi there. I'm new to SkyDemon and am doing some trial route planning to see how I get on with it.
One thing I've noticed is that when planning to fly along the Manchester Low Level Route (LLR) SkyDemon doesn't seem to know about it, and warns me that my route goes through Manchester CTR/Class D airspace.
Here's a screenshot of the route I've planned on my iPad Mini to show an example of what I mean: