The ad-blockers were originally suppressing links with the Ancestry domains from appearing in web pages, including WikiTree pages. So by using the Ancestry External Link Templates that use the WikiTree affiliate-prefix, prf.hn..., or by hard-coding that prefix ourselves at the beginning of an Ancestry link, we were avoiding the suppression.
But the ad-blockers are now also suppressing the Ancestry prf.hn... affiliate prefixes, so the links are all being suppressed from appearing in web pages now. Using the ad-blocker icon on a WikiTree web page, you should be able to disable your ad-blocker for WikiTree and refresh the page to see the links again. Unfortunately, that only works on a user-by-user and site-by-site basis. So everyone has to do the same for their own browser(s) per site. Many users may not even realize that there are legitimate non-ad links (such as the Ancestry free shared images) being suppressed by the ad-blockers.
BTW, Jamie Nelson (in another G2G post) has indicated that she's looking into possibly adding a template for the free shared images, but that won't help with the suppression issue.