Failed testing authlib with Insomnia tool

I launched this example server and registered a user app. I am trying to simply see something at least working, but it is pretty difficult. I am not sure if this authlib library is completely messed up or am I doing something wrong. So I fill everything like this, and get a response, that Authorization is not provided in header. If I switch to Headers tab and add header named "Authorization" and write something in value field, I get response that I provided invalid token. But as I understand, Insomnia handles this and 1: gets token 2: performs request that I want (in this case GET:/api/me). So where is problem, why this library won't work as expected?

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