An Appsumo Select offer should be 100% reliable, but evidently, that's not the case. Many of us purchased Tier 3 and now find ourselves $250 lighter within a few months. I feel exactly like many others here on Appsumo: it's a full-blown scam, and if there are no refunds and we only get the classic response "we are not responsible for the offers we promote," I believe Appsumo will lose many users (and revenue) in the coming days.
We buy here because we trust you, and being abandoned would not be right.
We trust in your seriousness and loyalty towards customers.