I don't have either of those issues. Mine is simply logistics and emotions. My 5yo is in kindergarten and needs someone to sit with her throughout the entire day because she can't read any of the instructions or buttons or menus on the computer, can't tell time for when things are starting, and can't sit still. (And don't even get me started on the school trying to do remote PE with kindergartners.) My 10yo is in 4th grade, and while he can operate the computer and handle most of the tasks, he's not emotionally capable of handling anything that doesn't go according to plan. I had to spend an hour one day getting him calm enough to figure out why he was having a meltdown - he'd forgotten to email an assignment on time. So I end up trying to get him calm once or twice a day (and he has amazing ability to need me exactly during the most pressing meeting I have).
And I'm super privileged in that both my wife and I can work from home. I can't even imagine how other families manage it.