Request Forbidden

I’m receiving a “Request Forbidden” response for several API requests.
Some requests include:

https://api.tcgplayer.com/stores/self
http://api.tcgplayer.com/{{version}}/inventory/productlists

headers= {
“accept”: “application/json”,
“content-type”: “text/json”,
“Authorization”: "bearer "+authCode
}
response = requests.request(“GET”, url, headers=headers)

Please help. Thank you