PDFCrowd might be a bit more popular than WPJobBoard. We know about 1 link to it since March 2021 and only 1 link to WPJobBoard. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Are you referring to this plugin: https://wpjobboard.net/? All their shortcodes start with [wpjb. The shortcode you're using ins't found in the source code. Did you or someone else on that project write it? Source: over 1 year ago
To follow on with this, I've used https://pdfcrowd.com/ too. Source: over 3 years ago
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