I'd like to speak to the it's the owner not the dog, it's a bit like the gun control issue.

I know the founder and know that they've set out to build a platform that takes the best features of sites like Furnished Finder and Airbnb and leaves out the clunkiness and annoying policies and practices.

Regarding the HOA and CC&R's, the builder can make changes to the CC&R's pretty easily while the development is under Declarant Control.

They are a horrible company with unethical billing practices.

Focusing on what you can control, like consistent effort, really sets the foundation for success.

Your tenants obligation was to pay you on Jan 1, so it doesn't matter if they paid someone else they still owe you...obviously details re: notice and dates all come into play here and from a practical perspective I'd work with the tenant and not move to evict over this.

That definitely brings a spotlight to that practice.

Figure out how to actually analyze property and practice.

If you have multiple LLCs, best practice would be having a Plus subscription.  

I applaud your desire to expose the practices which created loss and financial hardship for so many.