Following as I’d like to know the answer as well.

Is there any kind of discount/offer being advertised that’s not added when they checkout?

You want to consider using third party anti-fraud plugins like IPQualityScore to flag the high risk orders and then you’d ideally want to avoid those.

The right thing to do when an order gets flagged as high-risk (be it by Shopify’s built in anti-fraud or by 3rd party anti-fraud plugins like IPQualityScore) is to avoid it. I mean, it’s getting flagged as high-risk for a reason and ofc, the customer...

In addition to what’s already been mentioned, you may also want to consider looking into 3rd party anti-fraud plugins like IPQualityScore.

Have you instead considered using a 3rd party anti-fraud plugin like IPQS instead?

Not directly, no. But you could use a plugin like IPQS to flag the high risk transactions (i.e. orders from those who are frequently engaged in chargeback fraud) and you could then avoid those orders.

What’s your traffic source? Is it targeted or just random? Could be the cause of poor conversions.

Countless times and you’re right, it’s not fair at all. Have you considered looking into tools like IPQS to help flag the high risk orders so you can avoid them? They have a shopify plugin too to make things easier.

Have you looked into using a tool like IPQS to help flag the high risk orders so you can avoid them? Pretty sure they have a shopify plugin as well.

In addition to what has already been talked about, what’s your source of traffic? Is it targeted?

Where’s all this traffic coming from? Is it targeted or just junk traffic?