WP Affiliate – Install on root domain if payment form is on subdomain? by Tips and Tricks HQ Support Portal › Forums › WP Affiliate Platform › WP Affiliate General Questions › WP Affiliate – Install on root domain if payment form is on subdomain? This topic has 11 replies, 4 voices, and was last updated 6 years, 1 month ago by wzp. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In