Hello @dave82-1
Thank you for giving the plugin a chance.
I am sorry to hear you are having a hard time getting it to work. But you have to describe the problem or what you did and did not work for us to understand better the problem.
Maybe the problem is not that it does not work but rather that you expect it to work in a different way than it does. So the plugin starts recording discount prices from the moment it is activated, so it cannot take into account discounted prices set before it was activated. So if you add the discount after you activate it it will work as intended. Another thing to take into consideration is that for variable products that only have some variations discounted, it only shows the lowest price when you select the variation, if you do not select a variation it cannot show anything.
Hope this helps.
Hope to hear from you and solve your problem.