dav.mi.com is carddav server of miui.com(also known as xiaomi.com).
I’m sorry for taking no test account. I’ve only got my own.
By the way,I’ve found that miui.com authorize user by OAuth2. Is this anything make sense?
Ah. I didn’t address the moving window part. All I can think is sent data includes a scankey code to Grab Window. I use XFCE and it has ALT + Right-Mouse-Drag to move a window. I’m not sure how that would be fixed.
Additionally, while you are frustrated, try to refrain from cursing or swearing when asking for help.