Sort:  

You have two referrals links, you could say: use this link to download it from their homepage or if you have 32bit Windows then download it from their Github page.

Then ask them to click the other referral link, which will open then the bot automatically if they have the app installed.

It's true, I didn't think about that. Sadly the other link that opens the wallet directly doesn't seem to work. It only says "Upgrade Required" wtf.

My mistake, it seems like it is not possible to make that other one clickable on Steemit blog, only on real websites. I haven't tried if it works through some IM.

Put luckily, it is also possible to copy-paste it to "Chat > Add a new device > Accept invitation..." screen, there is a section about what each link does in my latest post https://steemit.com/byteball/@tarmo888/why-didn-t-byteball-use-the-referral-links-from-the-beginning