Recently I had a tiny strip of coastal map I had overlooked to download the corresponding BRouter RD5 file for. When routing through this part of the map Locus correctly detects missing RD5 file & offers to download, but tapping the Download arrow does nothing. I tried multiple times. No errors or notifications. When I downloaded via the BRouter app Locus was again happy.
(https://i.postimg.cc/bGnDHMGq/Window-20181022-120439.jpg) (https://postimg.cc/bGnDHMGq)
This button should forward you simply to BRouter app, it do not download these files automatically.
Anyway for me, this button not work as well ... fixed, thanks!