I am sorry you are having trouble with this feature and I feel you pain. We are a very small team of people and most are volunteers.
If you are still wanting to know how to get your Facebook Cover, please follow these steps:
1. Log into TWS.
2. Click on Facebook Cover.
3. Click on Email Me My Cover.
4. Click on Send Cover (so long as your email address is correct which it should be).
5. Open your email.
6. Open the email from TWS (check your spam folder if not in your in-box).
7. Click on the image of your cover and this will open it on your browser.
8. Right click on the image and save to your device. (Remember where you saved it.)
9. Go to your wall on Facebook.
10. Move your mouse to the top left corner where the little camera is and click on it.
11. Click on the choice Upload Photo.
12. Navigate to where you saved your photo and select it; then click Open.
13. Adjust placement as needed.
14. Click on Save Changes (just below and at the bottom right of your new image).

Hope this helps. If you need assistance, please don't hesitate to ask us for it.