403 Getting Guild Info / Channel Messages

[ChrisYatesUK]

OK so my bot requires the scopes : read messages & message history
Permission integer :66560
The bot has been authorised using the generated link by the server owner
I have tested it on the test server I created for test messages and it works however when I try it with the other server
that its just been authorised on it gives a 403

$discord = new DiscordClient(['token' => 'My Token Here','tokenType' => 'Bot']);
$channel = 933010260027932735; // My Channel
$main = 924525404658749500; // Channel trying to pull
print_r($discord->channel->getChannelMessages(['channel.id' => $channel]))
Gives me the JSON data
However when I change it to $main I get this error
Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: GET https://discord.com/api/v6/channels/924525404658749500/messages resulted in a 403 Forbidden response:

in /home/chrisyat/public_html/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113
Stack trace:
#0 /home/chrisyat/public_html/vendor/guzzlehttp/guzzle/src/Middleware.php(65): GuzzleHttp\Exception\RequestException::create(Object(GuzzleHttp\Psr7\Request), Object(GuzzleHttp\Psr7\Response))
#1 /home/chrisyat/public_html/vendor/guzzlehttp/promises/src/Promise.php(204): GuzzleHttp\Middleware::GuzzleHttp{closure}(Object(GuzzleHttp\Psr7\Response))
#2 /home/chrisyat/public_html/vendor/guzzlehttp/promises/src/Promise.php(153): GuzzleHttp\Promise\Promise::callHandler(1, Object(GuzzleHttp\Psr7\Response), NULL)
#3 /home/chrisyat/public_html/vendor/guzzlehttp/promises/src/TaskQueue.php(48): GuzzleHttp\Promise\Promise::GuzzleHttp\Promise{closure}()
#4 /home/chrisyat/public_html/vendor/guzzlehttp/guzzle/src/Handler/CurlMultiHandler.php(118): in /home/chrisyat/public_html/vendor/guzzlehttp/command/src/Exception/CommandException.php on line 57

The same when try and pull the guild info

I know he authorised it because I got the auth redirect page to create a dump with the server info upon successful token creation

Its driving me crazy now so any help is greatly appreciated

[ChrisYatesUK]

Also on the redirect url after the person clicks the authorisation link
Am I right to assume the
'client_id' => OAUTH2_CLIENT_ID,
'client_secret' => OAUTH2_CLIENT_SECRET,
needs to be the values in the bot OAUTH page ?