They are avoiding you and don't want to pay and most likely will not pay.I will take the 'L" loss and make sure they are out in by the first and start over with new tenants that's a win... disgruntled inherited tenants could be a nightmare especially if they refuse to move and not pay.At least pass by and try knocking and try to make contact and introduce yourself.

And if you do win the auction, but the house has liens, do you just hold it, or what would you do?

@Tony Hill, when I borrow private money I want it to be a win for both me and the lender.  

If you can find the right people - you can hit on a real winning combination.  

Too late now unfortunately, you have instantly created a reputation for yourself of being a soft touch landlord.

It is a win - win situation.

If I do the title search after winning the online auction and find any issue on the title, would I be able to cancel it?

And what would be fair and win/win for both parties?

@Tony Castronovo rightly said. you have to be in it to win it right!!  

I think Rod Khleif does a great job of incorporating the importance of winning the mental game into the themes shared in his podcast and book.