Wont receive activation code for mobile

I’m trying for two days now to add my phone number in my account so i can play warzone but i wont receive activation codes. I downloaded the authenticator for mobile but even there, when im asked for mobile phone i enter it and i wont receive the code so i can activate it. So im left unable to play warzone for no reason at all. This is so frustrating. There is no other way to activate it? If this doesn’t work, you wont be able to play? This is ridiculous.