Announcements language switches to english every start

Hi, every time I restart my Epix Pro watch and start an activity the language for the announcements on my headset is in English and Female although German is selected in the settings of my watch. If I go into the announcements settings and switch the language to another language and back to German, the announcements come back in the right language at my headset. At the next restart of the watch, the announcements are back again in English. The problem is only when using a bluetooth headset connected directly to my watch. When using my phone with garmin connect and get the announcements on the speakers of the phone the language is always correct in German. I've already done a hard reset, deleted watch from connect but to no avail.

Has anyone an idea? Perhaps restoring the voice files on the watch?

Best regards