For me the solution was indeed to use only the "!" as special caracter in the password. It works but i hope that the policy that Netatmo is going to implement on 17/04/2023 has no influence again:

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After the 2023 update i cannot login to netatmo weatherstation any more If I try i get an email from netatmo that a domoticz api tried to login and my netatmo password is blocked for 10 minutes After a few retries I have to reset my password I noticed that the Netatmo autentication procedure was ...