issue when create tab with shortcode aff url

hello
first I created page and I added to it [affiliate_referral_url]
then I created new tab and I linked this page to it

the issue that affilaite url appear like
https://mysite.com/affiliate-area/ref/8/?tab=myaffiliate
in stead of
https://mysite.com/ref/8/

so would you please advise how to avoid that ?
best regards