I checked with the latest Product Add-Ons version (v6.8.3) and confirmed that the ‘woocommerce_price_display_suffix’ filter runs in Product Add-Ons. I encourage you to update to the latest plugin version and if you notice any issues with this filter, get in touch with our support team via: https://woocommerce.com/my-account/contact-support/.
Hey there,
Thank you for getting in touch!
I checked with the latest Product Add-Ons version (v6.8.3) and confirmed that the ‘woocommerce_price_display_suffix’ filter runs in Product Add-Ons. I encourage you to update to the latest plugin version and if you notice any issues with this filter, get in touch with our support team via: https://woocommerce.com/my-account/contact-support/.