Posted - 09/11/2019 : 08:42:24
It may be that you need to check settings for Worldpay to see if any info passed back to your site is failing due to the SSL changes. I must admit I am not familiar with Worldpay (others here are though, I am sure), but that's where I would look first. If the setup requires a URL to your site, then check to see if it needs to be updated to https perhaps.
David
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