Are you using the official Netatmo app from Athom or the community Bticino/Legrand/Netatmo-app?
In case of the latter, you can reach out to the developer via this topic: [APP][Pro] Bticino/Legrand/Netatmo - Home control, based on Netatmo Cloud API or via the contact details on the app store page.
Just FYI: I am using the official Netatmo app (with a Netatmo weather station) and have no issues connecting.
