I confirm @JP-d third point with updating offline maps: it's nasty!
If you have limited data space capacity and if you are doing often longer trips through several Countries - you will download only applicable regions (not whole countries).
Truly, it's non-essential to update every week. But in preparation of the next journey (crossing different countries):
it's tedious to find out, which regions are still downloaded, and and need to keep offline - or should be deleted (in case of limited capacity) - and other ones must be downloaded.
Would be helpful to have a kind of "summary page" listing only the downloaded maps (with possibility to select and delete single items).
it's not user friendly, in case of information about available update - if affected region(s) are not mentioned.
After pushing the button "update", you have to wait a verry verry long time, for the update to finish!
Ok, you can work with a "crowbar" and switch of Internet connection. This will stop the download. Then you can see in the ultra-long list of all countries/regions, which one shows the icon for not finished update. Then you can decide: remove this map, or keep it for update.
Would be helpful to have a kind of "summary page" listing only the downloaded versus incomplete updated maps.