Here are some steps you can take that may help resolve your printer issue:

1. Check the paper tray for jam or blocking: Make sure there is nothing blocking the paper tray and that the tray is actually selecting the correct paper stock.
2. Check the printer settings: Double-check the printer settings to make sure it is telling the printer to use the correct paper tray.
3. Check the internal components of the printer: If some internal components, such as a motor or gear, are not properly functioning, this could be preventing the paper from moving as it should.
4. Restart the printer: Sometimes restarting the printer will reset it and help fix the problem.
5. Replace the paper tray: Depending on the make and model of your printer, it is possible that the paper tray itself is faulty and may need to be replaced.