Well, what I can see is, that I had to refresh or just go to the permalinks tab and save it. and it worked. this happened after I added the German version.
I also, had 20000 credits before I had chosen pay-as-you-go. was it used and was I charged after using those credits?
also, I want to add Multicurrency only for the German version. how do I do that?
We split your original question into new ones, so we can answer them individually. Regarding your second question, “also, I want to add Multicurrency only for the German version. how do I do that?”
With WPML, you can set a currency based either on the user's location or on the user language.
To set up currencies per location, go to WooCommerce → WooCommerce Multilingual & Multicurrency, and click the Multicurrency tab.