Change the password of your Arvato account in Movilitas.Cloud and update the NMVS from Movilitas.Cloud.
You can change the password on-demand or you can activate automatic password renewal.
Open the Arvato channel, change the password, and make sure you activate updating the password in the Arvato system.
If automatic password renewal is active in the Arvato channel settings, you don't need to update the password manually any more.
For more information, see Configuring an Arvato Channel.