Importing Kong API Specification into Insomnia does not work

Trying to import Kong API Specification into Insomnia. Does not work at all. Tried to use different Kong versions, from the documentation. Even registered to Insomnia for no reason, other than trying to make it work (why is registration necessary, suddenly?). Nothing works.

It’s really weird to see a Kong product not being successfully integrated with another Kong product.

Using most recent Insomnia client on Windows 10.