Hi there,
I will try to help. So I am clear on the process that is causing the black screen.
You have exported your blend as a GLTF and saved it in the applications folder containing your project.
You then used the App Manager and opened your application to verify that it is pulling up and functioning as expected.
It is at this point the project is black?
Webflow is not required to use or view your projects. However depending on how they were built they may contain HTML / Javascript and or other things that you built in the past were hosted with Webflow and now those projects would be dependent.
If you had a paid account and hosted the application on a webflow server, they may have deleted or suspended your access to that content.
If you could provide more detail I might be able to assist more.
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