Smart band 10 pro weird step counting

Hello.

I have a problem with my smart band 10 pro. The band tracks steps, it even seems to count them correctly. But then I open the Mi fitness app and it shows around twice as many steps as my band did. Then, when I try to sync the device with the app, it's the band's step count that changes, not the incorrect one inside Mi fitness.

Have any of you had a similar experience? Any thoughts on how to fix it?