If you have an auto-investment set up, it's your responsibility to make sure there's enough money in your account to cover it. If there isn't enough money to cover any order, it's no big deal: your auto-investment won’t stop! Your next order will be placed as usual, but if you missed out on on a great share price, that's on you.
If your available balance isn't enough to cover the total order (including fees) 5 days out, we’ll email you to give you a chance to top up your account. If the scheduled order comes around and your balance is still too low, you’ll get an email telling you that your order has been rejected because there wasn’t enough money in your account. The next order will be placed as per usual.