Sim refuses to host her class and angers the customers who signed up for it

I’m trying to hold a yoga and meditation studio underneath a tattoo studio, all as one business, with the new businesses and hobbies expansion pack. I noticed that customers weren’t really coming downstairs where all of the wellness stuff was at first, so I moved the ticket kiosk downstairs, which helped a little. But my wellness-informed sim, and business owner, refuses to actually hold any classes. At first I was trying to hold public yoga and meditation sessions, but nobody would show up and the class would cancel.

 So I tried my luck with the whiteboard. The amount of action cancelling was insane, but the really frustrating thing was when I’d successfully start the class, people would show up, and then she’d just walk away. I kept forcing her to go back and stand in front of the whiteboard and she’d just walk away again. I kept trying to select start class and it would say I couldn’t because one was already in session, but then she’d refuse to teach it. She just kept going upstairs to make herself tea or clean stuff, so the customers got angry and left. So frustrating.

I had a teachers yoga mat in front of the whiteboard as well as a bunch of student yoga mats facing it, in case that’s relevant. I tried removing the instructor mat just in case it was confusing the game, but it didn’t seem to help. I really love this pack when it’s working, but this is seriously frustrating.