You owe your backers from the Kick Start project an explanation of your absence and when you intend to honor your commitments--if ever. People sent you hard-earned money in good faith in exchange for services and to receive nothing with no updates and not responding to any emails or messages is reprehensible.
If you got in over your head, that's fine, but I think five years is plenty of time to complete those items you owe--or offer an explanation!
Life throws all of us curve balls, and if you have experienced some hardships, then I am sorry, but to ignore those people who supported you when you needed them is not the way to handle it.