Sylvania Dvd Recorders Super Value I Have A Sylvania Progresive Vcr-dvd Recorder, Which Will Not Read My Dvd-r Dvd's To Record On. ?

I have a sylvania progresive vcr-dvd recorder, which will not read my dvd-r dvd's to record on. ? - sylvania dvd recorders super value

It also covers fine with DVD-R, until recently, suddenly, a message that it can not save this album, and watch DVD-RW format. When I try, the disk configuration can not even change the music industry. Please advice.
Thanks