WSJT preference files corrupted

Gordon, ve7on

I am a Mac user and have used and enjoyed FT8 on WSJT-X for several years. A few days ago, out of the blue, my waterfall started acting up. It will only populate the incoming calls half way across (to about 1500). Also what I see on the waterfall is fuzzy. Not sharp and clear as it was before. The width is set to 3200 HZ. The program works fine on another computer. I have checked all the settings and am sure that is not the problem.  I am assuming there is a corrupted ini file but I cannot find the files. Reloading the program from scratch makes no difference.  The preferences remain the same so I assume they are not deleted when I delete the program.  Any ideas what I need to do?  How do I delete and re load the preferences files? The manual says the settings should be in (~/Library/Preferences/WSJT-X.ini) but they are not there. I see no mention of WSJT-X anywhere in the preferences section. Many thanks Gordon, ve7on