One person built this and answers this page. Most problems have a quick answer below.
This reaches me directly, and a person reads it.
Almost always the Apple ID. The Week is bought in the app and belongs to the Apple ID that bought it, so on a new phone, or after a reinstall, tap Restore purchases under the Get the Week button and it is back. If you signed in afterwards, it also follows that account.
If restoring does not bring it back, write below and say roughly when you bought it. The purchase can be found in the App Store records and the Week granted by hand within the hour.
Download it on wifi before you set off, and leave the app open and the screen awake while it runs: it is a few thousand map tiles and it takes a couple of minutes. If it stops partway, open the The Week button again and it picks up where it left off rather than starting over.
Tell me which stop and what you found. This is the most useful message this page receives: everything here is independently researched, places change, and a correction from somebody standing there is worth more than a week at the desk. It gets fixed for everyone.
Say which place, and that you took it yourself. I will write back to the address you give for the file; for a video, a YouTube link is enough. If it goes up, it carries your name, and it comes down whenever you ask.
Refunds go through Apple, since the App Store took the payment: reportaproblem.apple.com, or the purchase history in Settings. Ask within 14 days and this end will back the request, opened or not. The terms are here. Deleting your account is a button rather than a request, on your account page, and what survives it is set out in the privacy policy.
Write below and say which title and which page. Locations are independently researched and titles are named only to say what was filmed where, but if something here oversteps that, tell me and it comes down while we talk rather than after.