Open your account dashboard and find the API keys page.
Create a new key — just giving it a name should be good.
Paste the new API key, or an existing API key, in the box above.
Fill in the boxes, then press Preview.
No preview yet
Do not rename the file
The downloaded image already has the correct name. RVC reads the latitude, longitude,
zoom and grid size out of the file name to place the map correctly — if you
rename it, RVC cannot use it.