And @BJReplay, it’s even more messed up than just potentially two folders. The Oziee integration of old and yours both have the Home Assistant manifest.json “domain” of solcast_solar, which should identify them as the same thing. The domain must be unique, and must not change.
This is why installing both at the same time should not be possible. We check for a repeat install and block it. So did Oziee.
Having both folders would be possible if the names were different , but based on my testing the folder used to initially install the integration from wins., but the manifest domain name would need to match the folder name.
The only way a folder other than solcast_solar could exist is if a manual custom component install outside of HACS was done to a folder named something different. And the only way that they could co-exist as installed integrations would be if the manifest.json had an altered domain name (and the folder name matched that domain).
Purely speculation in this case. We have no further info to go on.