incoming links

Hi.

First of all, I am using RANK Math well and thank you.

I’ve been using it for 2 months.

At first the incoming links were checked well,

but, From some point onwards, it is continuously checked as 0.

From the beginning until now, in order to induce visitors to my site from outside the same
I am adding a link and I am wondering why the incoming links are not checked.

What is the problem? I am wondering if there is a solution.

Please understand that it is awkward because I do not speak English and ask questions by turning the translator. Thank you.