Issue with intercept deployment code and google tag manager

Having an issue launching my site intercept. We have implemented the code via google tag manger and see the deployment script firing on the page. When trying to trigger the intercept at 100% intercept rate, it is failing. When trying to test using the bookmarklet I am seeing this error in the console:

`>GET https://znbr5amnlemoxdurh-redbubble.siteintercept.qualtrics.com/WRSiteInterceptEngine/?Q_SIID=SI_di0RZmSbDxRa8a9&Q_LOC=https%3A%2F%2Fwww.redbubble.com%2Fp%2F25-awards-and-media%2F%3FQ_DEBUG&Q_BOOKMARKLET net::ERR_NAME_NOT_RESOLVED`
(anonymous) @ VM4414:formatted:16
(anonymous) @ VM4414:formatted:20

!

The really annoying thing is, I had this working last week - and for some reason it has stopped working.