Error while creating token for API

Hello,
I need to create token to use terraform VOH provider and when I use the dedicated page (https://eu.api.ovh.com/createToken), the reponse is Error: Invalid account/password, while I used my ovh account credentials and I have activated Developer Features in my account.

Same here, I use the same credential with which I can authenticate anywhere else but still… invalid account/password.

The /createApp page logs in fine… I'm puzzled.