Facebook authenticator problem

Hello, don’t know where to find a help, my question is due to facebook authenticator problem. I wanted to start my facebook ads for my shopify store, and somehow it started to show an authenticator error -

“You can’t make this change This is because we noticed you are using a device you don’t usually use and we need to keep your account safe. we’ll allow you to ma
ke this change after you’ve used this device for a while.”
I use the same mobile phone and the same computer.
How do i fix this?

Thank you! I guess 2 months mobile phone is not enough time for facebook, so i have just took my old mobile phone, accepted in facebook all alerts of new devices (checked “this is me”) and it helped. Thanks!