In short yes more than likely your insurance won't cover you on personal car insurance check your car insurance Cover I upgraded
Mine to business insurance because I wasn't covered if I did this and didn't want to risk it barring in mind you'll more than likely going to be on the road all/most of the day. If your stopped by the police and your carry goods/parcels and your using personal car insurance it's void more than likely.
No, at the time of writing insurance required for delivering is provided on temporary basis.
Yes you will