Why is RankMath not Detecting the Internal or External Link I added to the page?

Hi Team,

I am busy optimizing a site for a client, he has your pro version installed, but when I add internal and external links the audit does not pick it up.

Here is the link to the page: https://citylinkcabs.co.za/about-us-city-link-cabs/

Links can be found in;
♦ 1st Paragraph >> First 2 words >> Transportation services [Intrernal Link]
♦ 3rd Paragraph >> Last sentence >> taxicab service provider [External Link]

Thank you in advance for any help or guidance.