ProSites redirect to dev site?

I'm sure you're sick of hearing from me, but I have a real head scratcher on my hands. From my live site (techiechicpopupshop.com) the sign up page redirects to my dev site (techiechic.store). I've looked through all of the settings and the database and done a text search on the code... nowhere do I find a link to my dev site in any of those places. I have duplicated my live site to my dev site and I would understand this happening in reverse, but I can't imagine what is going on. I determined that it's definitely connected to the Pro Sites plugin because I disabled it and was able to hit the sign up page just fine (although there was obviously nothing on it). I'm super perplexed, any help would be greatly appreciated.