Question mi band 4 disconnect to mi fit after some minute

[amirghourchian]

from yesterday my mi band 4 automatically disconnected from mi fit app and i must be connect it manually, i do something : reset my mi band, reset mi fit, remove mi fit & install it again, actually after update mi fit to new version (4.0.7) it was happen

 

[amirghourchian]

finally i found solution for this problem, you must connect with mi account and not use google account