My API Keys aren't accepted in my fluency now CAT.

@Pontus Liljekvist Could you please cross check if you have copied the correct keys from the translator text resource in Azure portal? It is advisable to check if the keys work as a standalone when you call the translator text API using REST calls? This will validate if Azure is accepting the keys directly. If this works and there is an issue from fluency you can check with fluency support for further debugging. A simple REST call can be called using the below:

curl -X POST "https://api.cognitive.microsofttranslator.com/translate?api-version=3.0&to=zh-Hans" -H "Ocp-Apim-Subscription-Key: <client-secret>" -H "Content-Type: application/json; charset=UTF-8" -d "[{'Text':'Hello, what is your name?'}]"

Please replace the <client-secret> with your key as copied from Azure portal.

Sorry for being a newbie, but excactly how do I do a REST call?

@Pontus Liljekvist Please run the curl command mentioned in my previous comment and use the key by replacing <client-secret>. The link referenced provides more details on how to make this call.

I still don't understand what to do or where to do it...

Please, refer to the steps mentioned in my first comment to verify if your keys work directly by posting a call to the API. If the keys work then the issue is from the fluency software as it is unable to pass valid Azure keys to the translator resource.