Why don't you just email me at paul (at) waterwayroutes (dot) co (dot) uk with details of your order so I can find your record and help. That's the easiest and most accurate way to get help quickly.
You need to load the "Memory-Map App first, then click on the link in your order email and it will load automatically. If your download link has expired then let me know. It's unfortunate, but I have to make the links expire as some naughty customers post them on the internet and the whole world starts downloading my maps for free until the link expires.
I produce the maps as a hobby and, as many others on this forum have said, these are the most up to date and accurate maps available. I produce the FREE maps for over 50 restoration projects and sell maps for the open waterways to make those free rather than putting lots of money into my pocket.
I know a lot about maps and waterways, but not much about the App, but don't need to as the download link will load the maps automatically. That's why I don't spend lots of time and money investigating different types of phones, they all load the maps the same way.
As for referring to old maps - they come with monthly updates, free for the first 6 months, then a greatly discounted price to update after that. Anyone who has my maps can update to the latest version if they just email me with their details. Nobody should be using an old version of my maps when monthly updates are available.