Display Netatmo data on WIO Terminal

Hi all,
I am struggling with getting WIO Terminal to work with Netatmo. I struggle with the authentication process and start to wonder, if this is even possible with WIO. Does anybody have experience with the steps required for OAuth2 authentication with Netatmo (Netatmo Connect | Authentication) or a similar process?
Any help is highly appreciated so that I can finally move on with the project…