Hey,
I almost have the same problem.
My site is partly English and partly German, but it should be completely in German.
I have downloaded Loco Translate and adapted everything according to your instructions. If I go to Loco Translate, then Themes and finally to XStore Child or only to XStore, then both are 80% translated into German.
But unfortunately not all words in German are shown in the shop, despite translation.
Example:
In the Shop > RETURN TO PREVIOUS PAGE
At Loco Translate > Back to previous page
I’ve always synchronized or stored everything, but nothing happens.
What have I done wrong or where is the mistake?
Best regards.