Here’s the tutorial:
I believe there’s been some problems with one of the programs that allows you to use scripts on Firefox. Not sure which one it is, since I use Google Chrome. If someone knows, please let @rumade know (in case they use Firefox).
I suggest you to try and find a 5 minutes interval to do the first reviews on that day’s new items around the middle of the afternoon. I would also highly suggest you not to finish that day’s reviews at 2am. The midnight reviews will last until 12:59am, so try to finish with WK for the day around that time. You might think you aren’t really that tired, but if you try to do the reviews with a more fresh mind, you’ll see a big difference 