The language for the User Dashboard can be changed to the one the affiliate is comfortable with. Follow the steps below
Step 1. Under "Set Up Software", click on "Settings"
Step 2. Click on "Translate Software" on the right side
Step 3. Select the language and click "Translate Now"
Step 4. On the list of pages, click on the Translate Now link.
Step 5. Click on the Text area (Dotted box) to change it
Step 6. Modify the field and click "Translate Now"