yep that’s our site 
thanks. i’m the admin of the Discourse forum, but not the site it’s embedding to.
yea i don’t see any error in your code so i wonder if it’s the wix site. it may be the other settings like allowed hosts and paths with wix. hopefully they can give you some assitance from their end or someone here may recognize your issue and be able to help. at the moment, i am not seeing why it isn’t working for you.