Although certain defenses do exist including, insofar as is relevant here, unreasonable hardship, " 'the court's discretion to grant or deny specific performance of a contract for the sale of realty is not unlimited; unless the court finds that granting a decree of specific performance would be a drastic or harsh remedy, or work injustice, the court must direct specific performance' " (id., quoting 91 NY Jur 2d, Real Property Sales and Exchanges § 204).

They are billed as "a scientific approach to single-family rentals" and use "institutional grade property management," which usually means they are a tech company in real estate and likely either don't have the existing property management relationships in each area or you chose an area where they don't have enough units through Roofstock for the PM they chose to care.

If you stay elsewhere, consider relocating to a thriving, affordable market like Charlotte or Tampa, where you can house hack or live in a property before transitioning it to a rental.Good luck!

I love the program, as it helps many people who can't afford housing.

as a flipper, with the participation of a wholesaler and a hard money lender, what actions should I take BEFORE I close and buy a house (tell me step by step please because i dont really understand the sequence of events) and also please tell me when to do due diligence to make sure how much does it cost to renovate the house and is it worth buying this house?

For starters, I recommend to begin with a single family home or if you are looking to start locally, do house hacking. 

Quote from @Roger Flot: I was reviewing some renovated listings in my area and one indicated that even though the house was originally built in 1920, because of all the renovations bringing the house to current code, that you could get 2024 rates on insurance. 

Securities and Exchange Commission in January, the company’s real estate business lost $1.12 million, although the firm had relatively little debt compared with the stated value of its assets.The company also disclosed that it may use new investors’ money to pay dividends to existing ones.

This is the heart of the reason housing isn't mroe affordable, that landlords bear these types of costs every day.You could probably find cheaper labor, especially to haul away the junk, but not easily as an out of state investor. 

I currently have a house I am renovating that should be worth around 210k-240k and rent for $1,800 - $2,000 in May.