Who needs dvd's, anyway?

For the first time in years(!) I have to deliver a video on dvd. Yes, I have burned the occasional dvd but almost all of my work is delivered as webfilm, in quicktime. This client wants 25 dvd's, too small a number to go to the shop so I burn it myself. Real old-fashioned handmade dvd's.
I burn 25 of them and test a few on my standalone dvd-player (which has become obsolete since I got my WD Mediaplayer 2 years ago). I also play them on my Mac and Windows PC. All is well.
I give the dvd's to my client, who gave it to hér boss to view it at home. He returns the dvd saying it doesn't play well: the lower thirds with his name & title are cut off horizontally. I ask for the dvd so I can check if it's bad. I insert it into my dvd-player and it plays fine, as expected. Then I decide to try to recreate the problem and all becomes clear when I set the dvd-player to display 4:3. It cuts off the picture exactly where he told us.

Mailbox: why did I buy this?

What was I thinking when I ordered this item from mister Wong Wai Ming in Hong Kong? Perhaps I thought I could use it as a handheld stabilizer for low-angle shots. Maybe it was the solid, friendly round design that charmed me. Or the coldshoe mounts- I'm a sucker for coldshoes. (After a year of owning it, I still haven't mounted a second coldshoe on my Sony EX1R for my wireless receiver...)
Maybe I had the ludicrous thought that I could add the C-shaped bracket to my Gini-rig. Perhaps I wanted to use it for parts. Or was it just the fact that it was only US $12,80 including shipping from China?