Default 8312

Hello I have big problem with my Oneplus one

I remember that today I have entered this code with dialer *#*#2288#*#*

Now the phone for any calls that I receive tells me unknown number and if I try to call a number on the other side tell me that the call is seen as a private non-issue.
I went into the settings and the chimeras show number is activated.

Can you help me ? pleaseee