While at a graduation party"Our landlord was excellent here is his card give him a call, he may have something available"vs"Our landlord was good till we tried to leave and then he nickel and dimed us all the way to the end, I'd steer clear of (insert name here)"

The whole portfolio potentially falls like a house of cards.

This comment as it stands doesn't really provide enough info for a conclusion.If you could include the type of ad you had, what the copy consisted of, your budget, how long you ran it for, who you targeted, etc. if that makes sense.For all we know, your ad could've said "we buy houses" in comic sans rainbow colors and targeted males aged 18-24 in one zipcode who have "recently bought using a credit card online" ... which would most likely not generate any leads and be your reason for not getting good results even if you had a $20k landing page haha. 

It was a card that cost $10.

They pick up on investor sales and send post cards to them.

Because i wanted to create business name and put it in my business card so they will easily contact me but im not sure if it will violate the law for not having business license?

At least pay down high interest and credit card debt. 

A title search revealed several liens against its owner (breach of contract, credit card judgment) as well as multiple Ohio state tax lien against his LLC company.

Other sources might include credit cards, home equity loan, 401k loan, loan from friends or family, selling something, working a second job, etc.

i.e. using personal credit cards/bank accounts to fund business transactions