Do you really blame them for paying people threatening them with late fees or repossession before you?

Quote from @Marc Shin: I've been working with a contractor on some renovations and they are threatening to take me to court. 

They were demanding money again and threatening me.

Now, the contractor is threatening to file a **lien** on the property, which could cause major delays and additional expenses.

Landlords can enter a tenant's property for a variety of reasons, including: Making repairs or replacements Responding to a tenant's request Removing unauthorized window coverings Preventing waste of utilities Changing filters, testing, or replacing smoke detector batteries Inspections Helping with an emergency inside the unit Posting a notice of eviction"Research your state laws because some of your comments indicate a lack of understanding of the landlord/tenant laws where you are operating (like threatening the tenants to keep the security deposit if they don't respond to you, I doubt that is actually a valid reason to keep their deposit, or evicting for late payments, or charging the tenants for your warranty repairs because you missed your 11 month inspection window which was your responsibility, and it looks like your lease says you can charge up to 18% interest for unpaid fees, is that actually legal?).

If you had a mold remediation company do all the work and mitigation, send the threatening party the reports and clearance.

Yet for owners of rental SFRs, duplexes and condos—not to mention retail and restaurants—COVID-19 threatens to reduce landlords’ rental income, perhaps entirely.

@Jae Yoo you have a few options:1) Hire an attorney to write a threatening letter.

Fannie/Fae will have some protection, that plus these lenders want your business and won't threaten to force it that way. 

Threatening me by saying you won't buy another one is like the tenants who comment on all of our eviction videos saying "they evicted that tenant as soon as he missed his rent payment.