When you get a new car, you may not be free from problems. Because there are manufacturing defects inherent in the car that you may be facing. There will be a period until all these are solved. You take it to be examined where lies the problems, they say 'they don't do inspecting on weekends'. So, another trip is required. When I am finally available to spend half a day at the workshop, Alas! 'We know your problem but there's no stock at the moment'. What else? Another trip later.
When you buy any new electrical appliances, you are also not free from problems. The culprit is defects in the factory. Is QC still practised?
So, one problem after another that we, those working from home, need to cope with, amongst other trillions of minute and major problems. Call them challenges, to be positive.
Only Lady Luck can help us.