Error with API Playground

I’m trying to use the API Playground with my API KEY and I have a Pro Plan. The API Playground gives me an error every time I configure my API - I already tried with two different APIs, but always with the same result.

At first, I’m using the sandbox API until I learn it - I don’t care about the watermark, but I also tried with the live API KEY but got the exact same result:

I tried the help icon on the bottom of the screen but they simply redirected me to this forum.
Can you help?

Hey @ecarlotti

You shouldn’t need to input an API key in this playground, where are you looking to input your key?

When I upload a custom picture, at the bottom of the screen there’s a button saying “Remove watermark”. When I click it, there’s another popup with a button “I already have a key”, and then I can insert my API Key. Without doing this, several features seem “blocked”, so it’s not about the watermark. After doing it, the errors start.