Objects showing up in Sequencer, but not in render

I’m still stuck on this scene:

Two items (The power strip and the second monitor arm) either don’t show up in the render, or remain static, not moving with the rest of the objects, I’m really running out of ideas here. Any ideas? I tried attaching them to actors, and it seems to work in the sequencer but not in the render.

I’d really appreciate if anyone had time to actually help me with this, I need to finish this project within the next two days