Hello,
I solved the problem. What I have done is:
1) I went to each attribute title (under items) and clicked “edit” …
2) Than I “de-ticked/disabled” (since it was already enabled) and ticked back again the “Translatable” option (Enable this if you want to translate attribute values with Woocommerce Multilingual) and saved/updated the action.
After that all variations of each attribute loaded in woocommerce multilingual.
Best regards,
Peter