No methods present in tlb/ocx component

I want to use WinSCP in my C++ Builder XE2 project by using COM interop. Therefore I registered the latest WinSCPnet.dll as is explained in readme_automation.txt. That gives me a .tlb-file which I can use in C++ Builder.
In C++ Builder I use 'Import Component' - 'Import a Type Library' and going through all the steps in the Wizard including 'Generate Component Wrappers'.
Finally putting it all in a new Package. It compiles good but when I look in the generated code there are no methods for the classes available. (See attached zip-file).
What am I doing wrong?

I have no experience with that.

Though the problem can be that the library uses late binding, because it is primarily intended to be used from scripting languages.

See a comment for ClassInterfaceType.AutoDispatch
https://learn.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.classinterfacetype