Using Dev Rom The Phone Is "lost"

[lmerega]

Ho all, I bought an used Redmi Note 3.
Since I use stable ROMS, everything works fine.
If I use a dev rom, the phone results as "lost".
I cannot access my mi account.
I can do it using my stable ROM.
What is happening?
BTW I am trying to recover the previous user password

TIA

.luca

 

[Sgf_Sdgf]

same here, what can i do please?