What happens when Apple turns this number off and enables it?

I can't get text messages because when Apple sets the number to block incoming calls, text messages, etc.

To block a number call:

Open the phone and call record interface of the mobile phone. Find the number you want to mask, and click the exclamation point at the back.

At this time, the details of this number appear. Please note that there is a number block at the bottom, click this option.

After selection, a confirmation box will pop up. After the screening is confirmed, you will not receive calls, text messages, etc. At this number. Click Block and confirm.