Hello Roland,

Thank you for reaching out to us.

Yes, of course we have checked and everything is working on our end. Please check if your settings and added languages are correct and also if the language in your page locale is correct. In the version 5.6 , we added a new option, you can now set/change Customer Notification Language :

In Amelia Customers tab, in the "Edit Customer" modal you will find the Notification Language setting.

This is the language in which the customer will receive notifications for all bookings going forward,

( made from the back-end/front-end/employee panel).

It is preselected if the customer has booked on a page in the language available in Amelia notifications, 

or it can be set here.

When the notification language has been saved for a customer,

then later on, even if they visit another page that has a different language locale,

this customer will still keep getting the Notifications in the same language which is saved here,

unless an Admin changes it for them on the back-end.

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If you have any more questions please open a new separate ticket for each question and we will gladly help you there.

We wish you all the best.

Have a nice day.