AST not working properly with Yaymail and WPML

I already posted this, but since nobody is responding, here goes once more:

I am using AST with Yaymail Pro and WPML. Each are said to be compatible with each other. The problem is I cannot get the AST tracking widget (for sending the tracking information in order completed mail) in Yaymail properly translated for Dutch and English. Your editor doesn’t provide an option to set information per language. WPML string translator isn’t working either for this. Please help out, basically it’s just within the widget the “tracking information” and “follow your order” strings that need to be different for either language. Also, the ‘hide header’ option in your editor doesn’t actually do anything (in Yaymail). Finally, the styling in outlook is completely messed up. Please see: https://i.imgur.com/uAfZMqk.png Thanks.

The page I need help with: [log in to see the link]