DeNoise blurs images when using standard model and other issues

DeNoise has started to create very blurred images when using the standard AI Model and also adding “castellated lines” across the images when using the low light model. I’m running version 3.7.2 and have tried deleting the program and reinstalling. This happens with all images in both RAW and JPEG formats. I’ve tried using DeNoise as a stand alone program and also as a Lightroom Plug in - still the same problem. The program worked correctly until updates were installed in December 2022.