WileyPlus is the devil.
My students are entering identical responses, down to formatting, and half of them are getting right answers marked wrong and the others are getting them marked right. I've tried having them log into their accounts on one another's devices - no luck. I tried entering the responses MYSELF in case there's some formatting inconsistency I'm not catching when I watch them do it.

I keep reporting it - and Wiley keeps "thanking" me and explaining how to manually fix the grade. I don't give a flying fuck about the grade! Fixing the grades is trivial - I'll do it.
You don't buy an educational product for the purposes of generating grades - educational products are supposed to advance the learning! Any moron with Excel can figure out a fucking grade - You sold my students something you said would help them learn and you're making it fucking impossible to fucking do that!
What I fucking care about is my students getting demotivated and having their efficacy destroyed by unreliable feedback! They waste 45 minutes trying to figure out why 12 divided by 4 isn't 3, then run out of time to finish the rest of the assignment.
The product is trash - textbook publishers are trash - capitalism is destroying education and that's further good for capitalism.
If I look for tenure track positions elsewhere after I finish my PhD I'm telling everyone in my first interview "I'm using open source materials only" so they can make an informed decision before they make any offers. The only reason I'd ever leave my admin position here would be to get a faculty position so I can enjoy the full benefits of academic freedom. And the only one I really care about is the freedom to put my students before publishers.
--WotC