I have trying to create experiences for Experience Targeting activity using VEC, but can't seem to get through the first step which is to get the page to appear for editing. I keep getting this error "Website is taking too long to load or does not contain Target Libraries." I have been trying to troubleshoot by following advice on this page, but haven't been able to fix the problem: https://helpx.adobe.com/target/kb/Website-is-taking-too-long-to-load.html.
I have deployed Target through DTM. Furthermore, I have custom rules that allow third party data to be used to build audiences. I did a simple A/B test with console messages to see if the mbox recognizes the third party data and shows me the message in the console meant for that audience profile. It worked. Now, I want to use VEC to create experiences for different audience but haven't been able to move forward because of that error.