Elements 24 not recognizing my DVD drive for backup

My first question is why are you backing up to a DVD drive and not a different internal or external hard drive?  Even if you have a small catalog with few media, a thumb drive would be more reliable and faster than a number of DVDs.

I have just confirmed that optical drives are not recognized in the initial destination selection.  However, if you choose any other drive, the destination Browse button will become active and you can then select the optical drive, as shown in my following screenshot:

I did not confirm whether the backup will actually record to a DVD.  If you decide to go that route, please confirm whether you were able to do so.