Hello, and sorry you're having problems. We are now connected on this website- which saves you money over having a Tech come to your home, and in many cases we can fix the problem you're having.
What is the Brand and Model Number of the DVD player in your question please?
Logitech harmony isn't the brand of the DVD player- that's a remote. I will opt out and perhaps someone else can assist.
Sounds like you are using a universal remote... Possibly not ll buttons are available, what is the make and model of the DVD player?