Here are some steps you should try for troubleshooting paper curling or wrinkling:

1. Check all paper settings in your printer. Ensure they are seamlessly set for the type of paper you are using.
2. Clean the rollers on the printer to eliminate dirt and dust. Clean them gently using a lint-free cloth with a small amount of water or isopropyl alcohol.
3. Change the humidity levels in the paper storage environment. Use a dehumidifier or a humidifier.
4. Check the paper you are using and see if it meets the printer's requirements.
5. Feed the paper straight and not through at an angle.
6. Flatten the wrinkled printed paper in a stack under a book. Let it sit for 24 hours.
7. Check the settings of your printer and your paper and try freshly flattening them.