Hi, don't know if this script is still being updated, but thought I'd give it a shot
There seems to be an issue lately where users (including me!) are having all of their installed scripts break on Wanikani. Disabling the Phonetic-Semantic script and reloading the page fixes it.
Sometimes, you can then reenable the script and have everything work, but sometimes everything just breaks again (in my experience)-- like, I couldn't get the script working in my lessons a few days ago, but then yesterday I could, and now today I can't again.
Anyway, the script is been super useful when it works, so thank you for making it! I'll keep trying to use it even if it does keep breaking!