Pretty much all the points you paid were wasted. 

We are currently working with our lawyers to take next steps and get our money back along with damages due to wasted time and investments we missed out on along with other people who they have done this too.

That’s correct, a foreigner can buy property through a Mexican corporation, which is a great option for those investing in multiple properties or running a rental business.Key Points I'd like to add to your post:Setup Costs: $1,500–$3,000 USD.Ongoing Costs: $1,000–$2,000 USD/year for accounting and tax filings.Benefits: Allows tax deductions for expenses like maintenance, repairs, and management.Best for: Multiple properties or income-generating investments.For a single property for personal use, a fideicomiso is often simpler and more cost-effective due to its lower maintenance requirements and feesUltimately, choosing between a corporation and a fideicomiso comes down to your investment strategy.

Perhaps you have this kind of time and energy to waste. 

Buy-to-Let StrategyGiven the strong rental market in Germany, the buy-to-let strategy is one of the most effective ways to invest in German real estate.

. --- Who gets all the phone calls and wastes time calming a tenant down because the owner's contractor doesn't show up as scheduled after they took time off from work or a 3 day job takes 3 weeks?

You should fire them right away and talk to an attorney to prevent the loss, but I wouldn't expect much and it could be a waste since a company that does this will not have the money to do anything.When you have just one unit and you are looking for PM companies, your options are the bottom of the barrel because it's not a good use of the big one's time.

That means there is not really an effect on the debt to income ratio neither positive (income) or negative (loss) but rather simply making that payment  non issue. 

(Because, if and when you do, it shows you wasted so many opportunities, by paying it off early in the first place!)

Don't waste that resource on bad assets.