Unresolved Newbie needs help with Longer LK5 Pro slicer program

Hi everyone! I am new to 3D printing and so far have had really good luck with my Longer LK5 FDM 3D printer (2 months no issues) until yesterday when I ran into a problem with what seemed to be the filament not feeding through to complete my 3D print. I fixed that by removing the filament feeder sensor plug via a youtube video and it seemed to work again. But then I tried to print some new files that I downloaded and had no luck, the print was spotty and there seemed to be no structure to it. So I opened one of the misprinted models in my 3D slicer program to view it in layer mode and the file was corrupt! However, when I opened it in Fusion 360 it was fine. I also successfully printed something else just to see if it was my printer or the slicer program. This is something new to me as I have printed over 40 models up to now with no issues. I really think it is my slicer program. Does anyone have an idea of what may have happened and how I can fix it? Any thoughts or help is truly appreciated