OK, the site is US based and operates in US dollars. So whatever deposit you made to the site get's converted by the site after they pull the money in CAN$ from your credit card or account. But if you have questions about that process you have to talk to customer service through your site account; as I said, I'm not a site employee.
Thanks for that attachment, I've looked at it. They already have judgement against you and this is a Notice of Examination. It's a summons to attend at an "examination center", not the court. At the examination center you'll be in a room with a lawyer or paralegal acting for the plaintiff, there will be recording made of the questioning, and you'll be under oath. They'll ask you all sorts of questions about your income and assets and bank accounts, and you'll have to provide a bunch of information and promise to provide more stuff too.
This is how they try to collect judgement.
Now, they just want their money. For them to go through all of this is a hassle for them and costs them money too. So if you make an offer for less than the outstanding amount they will probably take it, especially if the debt is now held by a collection agency.
Get a copy of the original order for judgement against you. They will have got some legal fees, and have have terms in the order for prejudgement interest and post judgement interest. Do the calculations to see if what they say you owe is correct.
Then contact them and make an offer. Start with half, and you have to have the money ready to pay them. If you offer a payment schedule they are less likely to take the offer because they want to close the books on this matter. A bird in the hand and all that. If they won't take half, offer a little more. But remember that they want this to go away too so you needn't go in willing to pay the entire amount.
If you don't have the money, then see the bank about getting a line of credit secured by the property. If you don't get this debt cleared up then the plaintiff will start garnishing everything they can, and can eventually seek an order that your home be sold in order to discharge the lien.
Bankruptcy is an option. If you have a lot of other debt then see a trustee in bankruptcy right away. But CT already has judgement and a lien against your home for security, so getting out of paying them now isn't going to be easy or guaranteed.
Does all of that make sense?