Permanent paper tray empty message on Officejet Pro 7740

[Scm3]

Had this 7740 since 2020 and since Jan 2021 my printer display FALSELY tells me that Tray 2 is open or empty. I’ve tried all the HP troubleshooting tips I can find but nothing has changed it one bit. I’ve opened it all up and cleaned exactly as per discriptions, restored to factory settings, deleted then reinstalled on PC but simply nothing works I’m losing my mind Esp as I’m highest risk lister for COVID sand have spent most of the past 2 years on lockdown. Crafting is the only thing that keeps me sane but I cannot afford to replace. Can anyone please help me to fix it 

TIA

sharon 

[sandytechy20]

@Scm3

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