There are plenty of coupon sites that hide codes only to reveal them after users click on them. This approach can be used to make sure your visitors use your tagged URL to use those coupons. Have you wanted to add such feature to your site? Coupon Reveal Button is just the plugin for the job.
The Coupon Reveal Button plugin lets you customize button text, link, and other settings. It has a simple button generator that lets you create coupon reveal buttons and display them with shortcodes or widgets. The plugin plays well with Gutenberg.