I just got an 880 for my 622 over Christmas and I love it! You will have to manually program a few of the 625's featres to the soft keys on the LCD. If I recall I had to program the DVR, Search and Recall buttons.
Otherwise it works flawlessly. The remote takes a little time to set up via the PC, but once you get the hang of it I think you'll be happy.
I'm at work and I have a horrible respiratory thing going on so I'm a bit blurry, but I can tell you that if you are having to go into device control you are not set up correctly. And yes, it's you. Not saying that in a bad way... the setup can, at times, be less than intuitive. I am assuming the "705" is your AV receiver?
I have a Harmony 880 controlling my 622, a Sony AV receiver, a Panasonic Plasma, and a Panasonic DVD recorder. I never have to enter the Devices section.
You MAY want to set up another login at the Harmony web site and start over. Select your devices and activities carefully. Remember what you did that worked and what doesn't work. Write it down.
It does take a little getting used to, but you can also call Logitech's tech support and tell them what's happening. They can make changes for you ... on your login... and then you update your remote and try it out.
The Harmony remotes are ACTIVITIES based. You should not be going into the device menues. If you ARE then you need to look at WHY and make some changes.
Do yourself a big favor, forget the Harmony and get one of these: RC: Home Theater Master MX-500 Remote Control Review (1)
Thanks for the reply. Yes, the 705 is the AV reciever. Like I said, I'm sure it's me. I'll try your suggestions tonight. How did you set yours up to watch TV? Did you create an activity to "watch tv", or "watch pvr"?