Can't upload file to Faithlife Feedback

At feedback.faithlife.com, uploading an image fails with a 403 from an OPTIONS to https://feedbear-files.s3.eu-central-1.amazonaws.com/fpaz69d16es729p18o5juw1ue1ht?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJ7YLRM6677CJIPQA%2F20201109%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20201109T190002Z&X-Amz-Expires=300&X-Amz-SignedHeaders=content-md5%3Bcontent-type%3Bhost&X-Amz-Signature=a65dafaa323702544c7d8973318b7f5e363c005fa4c26861da36b31e1e4a351f Reported by user here: https://feedback.faithlife.com/boards/logos-desktop-app/posts/error-adding-images-to-feedback-boards

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