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GraphQL Mutation Stitch: "error":"must authenticate

I try to add a new document via graphql mutation, In my app I use Email/Password I got also the token, then I put the token in the header but all get is

{"error":"must authenticate first","link":""}

I’m authenticated 100%, so what can it be? Is it something with the Rules?, I already allowed read & write

I fixed the error by changing my GraphQL tetsing tool, before I used Graphiql Desktop(electron app), I switched to Postman and all problems are gone, Postman is amazing!