Up to 8 attachments (including images) can be used with a maximum of 1.0 MB each and 10.5 MB total.
Make sure you use correct format in Authorize url.
Also try putting following and check you are getting the code back in the url
It would have been better if you had provided your format here to get verified
Up to 10 attachments (including images) can be used with a maximum of 1.0 MB each and 10.5 MB total.
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