New Device Marked Lost When Using Dev Builds

Feb 11, 2016
On my Redmi Note 3, when I use official stable ROM, I can login to my mi account.
When I switch to a DEV ROM, when trying to access my MI account, the phone tells me it is lost and ask for MI password which is not mine (I am still waiting an answer from the previous owner with its passwords to see if it solves).
BTW when I am logged with stable ROM my account numero is 161xxxx
When I try to login to ****** using DEV ROM it says the phone is linked with account number 159xxxx.

Plz help :(