Was Epicurus wrong about God? Sure thing?

Yes.

Epicurus' suggestion has been answered time and time again over milennia. Here is one example:

• Is God willing to prevent evil but not able? Then he is not omnipotent.

God is omnipotent. He (or She) is able to prevent evil. But He has given human beings Free Will and the responsibility that goes along with it. So He is willing to let humans use their Free Will to commit actions that are good or actions that are evil. Free Will would be of no value if God did not let us let us do good or evil.

• Is he able, but not willing? Then he is malevolent.

This conclusion is wrong. Epicurus is claiming that God giving humans Free Will is a malevolent act. I disagree and I hope you do too. It is Free Will that makes us human.

With love in Christ.

I don't think Epicurus had enough information. I wonder if he thought he was exhausting all possibilities with what he thought? I know he didn't consider all possibilities with what he is famously reported to have written.

I find the typical fault with people who try to philosophize God's intent is that they expect God to be a shallow thinker. They tend towards showing how short-sighted they are about God.

God as Christians define him could do anything. As I observe the world today, I'm dubious that he does anything. In biblical times God had intervened, healed the sick, part the sea and raise the dead. In modern times he does not of that. So I agree with Epicurus, If God is able but not willing, he is malevolent.

This kind of bullshit makes rational people want to puke. No matter what God's complicity or culpability in the matter of evil, religious zealots will excuse him with some pretzel logic. The fact of his non-existence completely exonerates him, without the need for all the torturous piffle.

So THIS is the best possible world, Candide? Good thing no one destroyed that argument.

Yes. As you said, St. Augustine addressed it long, long ago.

atheists don't see the fallacy in it, that's why they continue to copy/paste it, as if it was some kind of wisdom

INCORRECT RANT ABOUT GOD AND WE NEVER HEARD OF THE OTHER GUY....