because our mibox after update is unrepairable xP

Not sure why it won't show up, but it really didn't do anything. It is much better to email the actual developers. They can then fix it.

Because that was your last update.

Are you intered in contacting the app developer or the maker of the Mi Box?

Edit: As a different user said its best to contact the developers of the app via email.

https://www.reddit.com/r/AndroidTV/comments/8w8mhs/xiaomi_support_contact_points_globally/?utm_source=reddit-android

Because there are so many bugs they got tired of hearing about them