No worries, we can figure it out.
Is it still PDF? I mean, did you just use Inkscape to open the PDF file?
Well, you said you see nodes, so I think we can get done what you want....I hope, lol.
Select them with the Selection tool

, then look at the status bar to see what it says. If it say Group of something, then go to Object menu and click Ungroup. I don't know what will result from that, so you'll have to tell us. So again, after you perform the ungrouping, and without deselecting anything, look at the status bar and tell us what it says. If it does NOT say Group of something to begin with, tell us what it does say.
If it's clear enough to you, and you can move the words as you want, then don't worry about reporting the status info. But it might be that more than just the words are grouped there. And it might depend on what is there and what might still be grouped, as to the next step.
PatJr wrote:objects can be locked and I don't see any messages to tell you they are.
The message is there, but it depends on which tool you are using, as to which message you will see. The Selection tool gives the most basic info. But if you have the Node tool activated, and something is locked, you are correct, you won't know it. So if things aren't going right, it's always a good idea to activate the Selection tool, to start to see what you're dealing with (if you don't already know).