Think it's this part you need to check:
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Please note the string starting with amzn1 and ends with f1f1 should all be one complete string with no spaces or line breaks etc.
Code:
In the Client ID box copy and paste the following: amzn1.application-oa2-client.d839fbb21603478dbd332ab26fc1f1f1 Change the Authorization Grant Type to Implicit Grant
Please note the string starting with amzn1 and ends with f1f1 should all be one complete string with no spaces or line breaks etc.
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