languages in confirmation of donation

Hi,
I have my website in two languages. When making a donation from the language that is not the main one, after making the payment it takes me to the confirmation of the donation of the main language (and I have previously created that confirmation in both languages). The same thing happens with a failed donation, it automatically goes to the main language. How can this be adjusted for each language?

Thank you

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