The email links auto generated by WHMCS will always remain direct links to your WHMCS installation. Our "bridgewp" plugin (Bridge Helper for WHMCS) manages this by redirecting all users to the relevant bridge page on your WordPress installation when they visit your site.
Please follow our installation instructions located @ https://i-plugins.com/whmcs-bridge/knowledgebase/1069/Installation-Instructions-for-WHMCS-Bridge-PRO.html/ for more info on installing the addon correctly.
Once you have it set up correctly, please make sure you are *not* logged in to your WHMCS Admin if you want to test the redirect; it is disabled if you are logged in as Admin.
