Thanks for the review and the heads up! This has been fixed. Since it requires approval for accessing data on the new domain I think you need to manually update by going to add-ons and themes > WideGPT > Manage, clicking the gear icon, and selecting "Check for updates...". You will be prompted to grant permission for WideGPT to access data on the new url.

Thanks for your review and your interest! I intended to have the source on GitHub but never got around to it. Since you requested it I thought I might as well put it up. The link to the repo is now in the extension description.