I asked Aqara about what kind of shades I need with them. They told me that the minimum diameter for the tube is 40 mm. I found out that I need adapters for the correct tube diameter and profile, but when I asked Aqara about where I can find them, they just told me that they don't sell the adapters and cannot help with them.
Aliexpress sells some promising looking adapters for a 50 mm tube. The inner diameter of the tube seems to be more important, in this case 47 mm: https://www.aliexpress.com/item/4000169001089.html
Aqara has an installation video on YouTube, but it doesn't discuss what kind of tube or adapters are needed. A stop-frame from the video shows that they use a tube that seems like it could fit with the above adapter.
I also found a 3D model of an adapter for a 43 mm tube:
https://cults3d.com/en/3d-model/tool/aqara-srsc-m01-smart-roller-shade-controller-43mm
Measuring from the model, the inner diameter of the tube should be 39 mm and the profile is a bit different.
I haven't yet bought anything. I guess I would need to find an adapter that fits in with the motor and roller shades that fit in with the adapter. The motor doesn't have to be Aqara as long as it's compatible with Zigbee2mqtt.
I have almost always had good luck. Just one bad experience comes to my mind - my host in Germany was a psychopath. I didn't have any problems with her, in fact I hardly ever met her during a one week stay. But I forgot the heating on when I left. She got so pissed off that she left a long, insulting review, where she said shit about how we never got along. Airbnb refused to delete the review, so I deleted my account. By the way, I don't pay $200 for a night. I take the cheapest $20 room that I can find.
Anyway, I created a new Airbnb account. The nice thing is that I was able to use a referral link from my wife again to get the referral bonus. So by deleting and recreating my account, I actually made $50.