Was this a Reg D filing?  

Payments are split between principal and interest.

That being said, let me cut-and-paste a portion of one funds underwriting guidelines surrounding flood coverage requirements for their DSCR product "The appropriate amount of hazard insurance is determined as the lesser of:
o 100% of the insurable value of the improvements with replacement cost coverage, as established by the property insurer, or the unpaid principal balance of the first and second mortgage (sufficient coverage for the new combined loans), oro The combined unpaid principal balance of the first and any secondary financing, as long as it equals the minimum amount required to compensate for any damage or loss on a replacement cost basis, typically 80% of the insured value of the improvements.

Brian Nelson, a principal at Versity Investments, will serve as the primary point of contact until further notice.

This is return on equity, counting cashflow, appreciation, and principal paydown. 

Change current principal balance to a new number & save.- Go back to Properties page- Refresh- You probably see the old mortgage value rather than the new one for that property.- Go back to the Property Details page and edit mortgage. 

Or, do I need to show some form of monthly principal only payment?

If you win, that'd be all the more incentive for him to pay you your money.If you end up getting to that point, below is where you'd want to go to file a complaint with the Ohio Division of Real Estate.https://www.com.ohio.gov/docum...

As the lender, you can make a credit bid up to the total amount owed to you (principal, interest, fees), but if you want to bid more than that you’d need to bring in cash for the difference.

Mortgage signed but not filed.