They will just go ahead and take it and not ask you twice. When you complain, they send you to a concentration camp on the Kamchatka peninsula in Siberia. Don't fuck with IB man, just deal with it and move on.
nothing will happen. if ibkr goes out of business, your paper account will be deleted and you can open a new account elsewhere.
ibkr hasn't tanked. you need to learn to control your emotions. look at their balance sheet. if the stock should go to single digits mortgage your wife etc and buy.