Typically when I see failed Facebook ad accounts it’s due to improper implementation rather than the platform itself.

I'd then put in another offer-same as before  but for $4500 less explaining that the deposit the realtor has because they failed to present the amendment to the seller is the seller's money and therefore you are offering $4500 less (because they will get that money). 

There is always the risk that after you do the repair, the the system fails quickly after that. 

A tenant who fails to maintain a rental property could end up costing you more in property damage and court fees than the amount of rent they're paying you upfront. 

You don't want to bring over poor operations to STR because you will also fail there.

95% of part-timers fail because of the same reason.

If you fail to follow the rules, you may open your personal assets to a lawsuit.

This means the 50% rule fails now (50% + 60% = 110% --- 10% more in costs than rent), and other cost estimate methodologies seem to yield negative net cash flow.Am I thinking about this correctly?

Although rents increased by 2% annually, the purchasing power of this income is equivalent to $4,325 in today's dollars.Year 10: $5,000 x (1 + 2%)^10 / (1 + 5%)^10 ≈ $3,742Year 15: $5,000 x (1 + 2%)^15 / (1 + 5%)^15 ≈ $3,237Year 20: $5,000 x (1 + 2%)^20 / (1 + 5%)^20 ≈ $2,800Due to rent increases failing to keep pace with inflation, you won't be able to maintain your standard of living.

If they fail the second inspection, I terminate their lease and remove them as quickly as the law allows.