How do I fix the Top document or ADF feeder?

Hello. I have a question for a problem I have on my HP OfficeJet Pro 6968 printer. How do I fix the document or ADF feeder part?
I wanted to clean it up because it wasn't accepting any papers I wanted to scan. I took apart the left side of the ADF feeder. I'm not sure which side is this metal rod is supposed to go to? I need help ASAP.

Update (09/30/2021)

I'm trying to compare to these two pictures from a different HP Printer model or part in ifixit or ebay links below.

HP Officejet Pro L7580 Teardown

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