Pro Sites rebranding not working for multiple edits

I’m using Pro Sites on a test network, teaching myself how to set it up, and I’m having a hard time changing the branding a second time. The first change went smoothly and the new brand name appeared at the top of the page where users can purchase levels, which I am calling the “Upgrades” page. But when I changed the brand name a second time, the new brand name did not appear at the top of the Upgrades page. The old one remains, despite the fact that it no longer exists in settings. This happens in both Safari and Chrome, even when I clear my browser cache, and continues to happen even when I delete the plugin and reinstall it. Seems to me like some sort of bug… can someone offer assistance here please?

How it appears on the Upgrades page:

How it appears in Pro Sites–>Settings: