Currently, doesn't work at all for me. I followed the instructions on the lootspectrum website. I click 'View Inventory History' and from there, there is no 'Load Stats' button to be pressed. The page is identical to if I didn't have the extension installed.

Not bad if you're a newer player but doesn't go back to the start - goes back some years but misses all those early case opening years, my stats are basically incorrect.