By default, MyCashflow's Google Ads extension doesn't support different languages, but you can get around this limitation by using helper files and the Custom Conversion Tag extension.
If you intend to target your online store's Google advertising at multiple countries, you will probably need to create a separate Ads account for each country. To be able to use multiple Google Ads accounts in your online store, you need to create a separate tracking file for each account / store version.
Creating a tracking file for a specific store version
First, find each store version's ID.
Now, MyCashflow will automatically download the correct Google Ads code for the current language version. This allows you to use multiple Ads accounts in your online store.