I'm sorry to hear that you're experiencing issues with your prints. It can be frustrating when something that used to work well suddenly stops performing properly. After replacing the FEP film, you've noticed that the prints are coming out misaligned, deformed, or sticking to the vat. There could be several factors contributing to this, such as bed adhesion, printer calibration, and resin quality. I would suggest checking the calibration of your printer, ensuring it is properly leveled and that the print settings are accurate. Additionally, double-check the adhesion properties of your printing surface and consider experimenting with different types or brands of resin to see if that improves the results. Don't hesitate to reach out to the community for further assistance and troubleshooting. Hang in there, and I hope you find a solution soon!