Questo è quello che mi ha scritto il supporto della YI:
Hi there,
We are sorry because our server is upgrading, which would influence users in some regions.Please wait a while, if any updates, we will notify you asap.
Also, lease offer your camera ID numberfrom YI Home app (YI Home app --->settings--->camera name--->click the camera name you will see the ID number of your camera) and your region, camera model, app version, we will check for you.
Nice day!
Best regards,
Shelley Yan
YI Technical Support"
Vediamo se riusciranno a risolvere.