While I can access the workspace when turning off my VPN (Provider: Private Internet Access) I hope that I can use this site without removing my anonymity as turning it off for this site would require all sites to be unfiltered.
Are you saying you can’t use the Glitch editor with your VPN enabled? This sounds like a bug in your VPN setup to me. We shouldn’t be able to tell whether or not you’re using a VPN - it will just look like your connection is coming from a different address.