Please find bellow the second email from Netatmo support team when i told them that the problam is from their side
Are you sure that it is not Smartthings saying that they are compatible with us?
To explain better, we offer a free API so any third party can decide on their own if they wish to be compatible with us or not.
This means that we cannot track and take responsability for every third party application features, bugs or other.
There are only a few ones where we do, such as HomeKit, Alexa, Google Home to name a few and they are displayed on our website.
In other words, as far as I know we have no way to raise an internal ticket with smartthings or an exclusive partnership.
Thank you for your understanding.