I agree. If you could screen print your last failure in the slicer we can maybe see the issue.
Also, in the slicer do you move the slider and watch for things that may cause an issue? If you move the slider and see that prints begin in thin air rather than on a support (called islands) it is a possible point of failure. Note the circled area in the pic. That would concern me as a failure point. In the next pic the support grows into it, but possibly not after the print has already failed.
Did you print the test cube that came with the printer? It is added to identify possible issues. If you can't print the cube on factory settings you could have a lemon.
I recommend going back to factory settings and printing the cube. It takes a while but I think it will help ID any issues. We're here for you Les, so hang in there.