This should be a non-issue.

They definitely took your premium, but when problems happen they look for technicalities in order not to be responsible. 

If you decided to move, you would technically have to stop renting out the JADU since the primary residence will not be owner-occupied.That being said, I've asked a similar question recently at an ADU masterclass hosted by Kendyl Young from adudiggs.com.

The reality is there are many issues with ADUs as an investments and the poor valuation is just one of them.  

I ran into the same issue.

I just want to be sure because your text “Beautiful view of the countryside” could also technically work for the caption.

But if you are saying that is always breaking or giving you issues, I know that can be a make or break.

How can I correct cashflow issues if I have 3 properties?

I don't know what the issue is/was, but I think a lot of customers want to play games and he probably did his best to keep them on the straight and narrow. 

There are a lot of site-specific issues you need to investigate before deciding what the land is worth to you.