Can't add a new ID to Volume Purchase Program Customers

I have an app that I sell using Apple B2B / VPP. When logging into iTunes connect to add a new Apple ID (for a new customer) I am finding that clicking "Add Apple Id" is doing nothing (e.g. the page reloads, but I can't add a new Id). Presumably this is just a short term issue with the iTunes connect website? (I've been having the problem since yesterday). I've tried using Firefox, Safari, and Chrome; and connected on a few different networks to rule out my router. **Is anyone else seeing the same issue?**