My coupons stopped working with the new updates. They are no longer calculating in the totals
Gravity forms 2.9.15
Gravity forms coupons add-on 3.5.0
Themes, plugins (e.g. WP Rocket, WP Fastest Cache), and services (e.g. host provided, Cloudflare and their Rocket Loader feature) that include caching and/or optimization features have been known to cause issues like this.
Pages that include forms should be excluded from those features. See the following page of the documentation for more details:
https://docs.gravityforms.com/faq-on-cache-and-script-optimizer-issues/
You should also clear/flush any caches and the browser cache following WordPress, theme, and plugin updates.