When a tenant withholds rent due to issues like a missing Certificate of Occupancy (CFO) or code violations, it's important to understand both your rights and theirs, as local laws can play a big role in how this is handled.One of the first things you might consider is consulting with a local landlord-tenant attorney.

They had sent messages to the host through the vrbo platform with pictures of the issue for a couple days. 

Multifamily contracts are much more involved than residential contracts.You will no doubt have partners and this opens up a new potential set of issues.

Will it increase the locals cost of living, will they appreciate & like you being there, does it contribute to the housing affordability issue if a home is used for this activity or should it have sat a little while longer & encounter a price decrease for a regular homebuyer to afford?

Rinse and repeat.Potential Issues:  Tenant #1 on a month to month and not sure if they are wanting to stay.

The bigger issue in today’s market is that many real estate deals simply don’t pencil which makes it easy for the lender to simply say no.  

I live and invest in the area, and while I don’t personally have any units third-party managed on the Nebraska side, I’ve heard great things about Kouri Management.I hope you are able to make it work with a new manager, but if you keep having issues please reach out. 

Rent is due on the first, they have a 5-day grace period, then EVERY tenant with a past due balance gets an eviction notice.AFTER we send the notices we try to contact the tenants to see what the issue is.Also, as @Ricardo R. suggested, have your PMC do an Occupancy Check/Contact and take a subtle video of it to prove to you they did it and what happened.

Its good to see that there are no issues at this point. 

This plays into the affordability issues for tenants by allowing them to live in nicer neighborhoods for less money, yet I get monthly revenue comparable to short-term rentals.The BRRRR is alive and well.