I also have try to install atik air disc image but can't. Nothing happening. So I trying to install it on latest version of raspberry os. All I get is little happynes an then freezing software. After rebuting raspberry nothing, like I never have installed atik air on my raspberry. If I repeat process then again is working but only little time. Then software freeze. Really anoing. Model B+ same as yours. I have buy this shit only because of atik air and now nothing..... I will try to remotely control my 🔭 Whit raspberry but if that will not work raspberry pi model B + for me is just peace of trash.
This is not only problem with raspberry, also small tuchscreen not working even if I install official drivers.
For now all I manage is to connect it to laptop and control raspberry over same laptop.
Sad sad sad....werry sad