* UPDATE: Migrated InSite payment flow from SOAP to REST using the unified Redsys REST client, keeping token/COF handling, preauthorizations, and step-by-step debug logs intact for Apple/Google Pay and subscriptions reuse.
* NEW: Added terminal type selection (Mixed/Secure) for Apple Pay and Google Pay to choose the proper flow (direct vs. secure redirect).
* FIX: Prevented PHP 8.1+ deprecation notices in the onboarding/setup page by validating the menu slug before calling add_submenu_page().

* Tweak – Explain that plain text emails don’t track opens.

* Fix – Ensure referral coupons are validated properly when using WooCommerce block-based checkout pages.
* Fix – Prevent existing customers with one previous order from incorrectly receiving a second referral.

* Dev – Introduce PHP Compatibility Sniffs, running a dev version to include those available for PHP 8.4.
* Dev – Run the PHP Compatibility Sniffs against the entire production code base.
* Dev – Bump WooCommerce “tested up to” version 10.3.
* Dev – Bump WooCommerce minimum supported version to 10.1.
* Dev – Bump WordPress “tested up to” version 6.9.

* Update: WP and WC compatibility tags.
* Fix: Fix issue with the mail sending function.