Why can't I provide my mobile phone number on Netflix?

For days I have been trying to create a new account and every time I enter my cell phone number and press "Send me an SMS" I get the error message: "Something went wrong, unfortunately. Please try again later. "

Did you already use your mobile number for another Netflix account?

Yes

Then that's probably because I guess

Can't you enter the mobile number twice?

Beats me

But even if I want to use another number that has not yet been used, the same message comes up