Overall, it seems that it would be worth your time to seek a consultation with a local creditor/debtor attorney who can help you assess your situation.
First, if you think that the court made a mistake when it entered a default judgment against you, there is a way to ask the court to back out that judgment and give you an opportunity to dispute the creditor's complaint. You should have a lawyer help you look at this issue, however, because it is not an easy one.
Second, while it is technically true that a judgment against you does not give the judgment creditor the right to attach the bank account of the LLC, in practice it is not that simple. If you are a signor on the account, then I have seen banks wrongfully take money out of a business account and give it to the creditor. This leaves you having to go to court and fight to get that money back. Also, there are ways that a creditor can seek to attach your interests in the LLC - in essence any money that would go to you out of the LLC would then have to go to the creditor.
If this debt is a large one, and/or it is a serious risk to your business/livelihood, then go talk with a creditor/debtor attorney.