Roadstyler.com
Install was very straightforward , they have pdfs of their website. If you have two people you don’t need to completely remove the saddle bags. Basically remove saddlebag bolts install brackets w supplied bolts and reattach saddle bags.
It is a high quality part, I like it...
I wouldn’t hold your breath, the Wunderlich R18B backrest has been
“Not in stock, we have more coming soon!
Place an order to reserve.” since at least March.
Mine acted the same way but after the latest updates and service I deleted the app and started over w reinstalled app and new map downloads etc.. so far it has been working great for 1800 miles multiple states.
Try to run only the connected app on your phone if possible and select the map...