iPhone Not Receiving App Store Verification Codes

I can't get verification codes on my iPhone for the App Store. I get a notification that says "Codes are not currently being sent to this number." However, the device is valid on my computer and when I log in from a computer, I receive a 6-digit verification code on my mobile number. This means that the number is also active, but when updating in the appstore, SMS codes are not sent to the phone number.

Please help me solve the problem. I can't update any apps on my device