Great price if you were the end buyer , but a novice flipper bought it . 

The buyer was to provide proof of insurance paid in full for the first year.

Yes, at least that's how my agent here in Michigan has done it for our land purchase.

They will at least need the agent information to work with them to get what they need.

Did your agent approach Citizens? 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

You can google "debt collection" or "debt buyers" to find companies who do this.In general, be prepared to collect pennies on each dollar of debt owed to you.

I feel like this should be my agent’s and attorney’s fault frankly.

Any RE Agent who has closed more than 2+ Ryan homes in the last 12 months  . 

The risk to the buyer can be summed up as : violation of sue on sale can lead to note being accelerated:; assuming buyer is an investor and seller a homeowner the buyer will probably be named in a lawsuit should either the note be called or default occur.