If its truly intended to be an investment I say look at a different market and use the extra money to rent a sick house for a week or two in Florida. 

We got so sick of dealing with weeds and grass we tore out every inch outside and put in artificial turf in both exterior of our houses.

nice setting, 100% included in new FEMA 100yr flood plain.

When consumers are sick and tired of being sick and tired of shrinkflation and quit buying certain products then the prices will drop or sizes will come back.

To clarify a few points by putting it in simplest plain English terms. 

They are factually, actually and legally just plain wrong on how to STOP Due on Sale.

I want to house-hack a duplex but I am not ready to actually move out of my parent's house because of sick family members.

I trust my realtor, he seems very honest, so I am plaining to visit after furnishing ( we will hire someone to furnish my place) before picture taken and make sure furnishing is well done and be there for picture taken and do last work ( organizing or cleaning...) 

Even if you assume it was an honest mistake made at a time when they may have been dealing with a sick kid, they should be paying you that money back. 

Disclaimer - I am not an CPA or attorney but I became financially free doing this for myself after 10 years working as a w2 engineer :( and I am sick and tired of seeing highly educated and hard working professionals getting stuck in the rat race because we deserve financial freedom and the option to do more with it.If you are able to implement a real estate professional status tax strategy (REP) you can use passive losses from syndication deals to lower your ordinary W2 income.