Unable to send orders after subscribing to No fee

I get the following error every time I send an order. It was working fine last night. It stopped after I enrolled into the No Fee subscription.

{“accountSpec”:“MaskedAccount”,“accountId”:MaskedAccountID,“action”:“Buy”,“symbol”:“NQZ2”,“orderStrategyTypeId”:2,“params”:“{"entryVersion":{"orderQty":1,"orderType":"Limit","timeInForce":"GTC","price":1000},"brackets":[{"qty":1,"stopLoss":-10,"profitTarget":10,"trailingStop":false}]}”

I get a " 404 unauthorised error"
The permissions are all set too.

{StatusCode: 404, ReasonPhrase: ‘Not Found’, Version: 1.1, Content: System.Net.Http.HttpConnectionResponseContent, Headers:
{
Date: Fri, 18 Nov 2022 13:22:44 GMT
Via: 1.1 google
Alt-Svc: h3=“:443”; ma=2592000,h3-29=“:443”; ma=2592000
Content-Length: 0
}}

THis is the response

{“accountSpec”:“MaskedAccount”,“accountId”:MaskedAccountNumber,“action”:“Buy”,“symbol”:“NQZ2”,“orderStrategyTypeId”:2,“params”:“{"entryVersion":{"orderQty":1,"orderType":"Market","timeInForce":"GTC"},"brackets":[{"qty":1,"stopLoss":-10,"profitTarget":10,"trailingStop":false}]}”}