Connect plugin with sandbox account

[hendrik2022]

Hello, I would like to connect our allegro plugin to the allegro sandbox. The plugin has production status and works normally.

When I click authorize in our plugin, it takes me to this https://allegro.pl/uzytkownik/bezpieczenstwo/skojarz-aplikacje?code=.... (I deleted the code)

After that I am supposed to log in, but it is not the sandbox. And when I add the url with the sandbox url, it asks me if I am "plentymarkets" and I click on. After that I am redirected to the page of the link above, but with the message invalid code.

How can I connect the plugin to the sandbox? I can't find any credentials in the sandbox account.

Best regards, Hendrik Schulze