I have used this many times. The only problem I have had is when other poorly coded extensions conflicted or when I had messed something up. If the directions that people seldom read, does not produce great results, then you have other issues that are causing the problem.
Love the extension. Blessings to the developer!
In working with many extensions, I get a chance to see which ones have good code and which ones don't. This is a top notch professional quality extension with superb support and it is free. My suggestion to the developer is to add a Donate button to their website.
I am thoroughly satisfied !