GraphQL Mutation Stitch: "error":"must authenticate

MongoDB Atlas App Services & Realm Atlas GraphQL API
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1

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":"https://stitch.mongodb.com/groups/SOMEID/apps/SOMEID/logs?co_id=SOMEID"}

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

2

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!