app error for setting phone number

Hello ,,🤗

I have a problem about setting my phone number at zoom app.

I want to set my phone number at zoom app.

(I could set my cell phone number on computer zoom)

My phone model is iPhone mini 12.

I've done everything I can.

Check out the attached 3 pictures.

1 - picture

I entered my personal contact number except for the first digit 0.

After that, I entered the text in the security check order.

2 - picture

As a result, I received a message "Phone number registration failed. Please try again.".

3 - picture

And I even tried entering the sound code next to the security code.

But the result was the same. "Phone number registration failed. Please try again."