Version 9.1.1 (Maintenance) Maintenance WHMCS-27639 — UI Improvements for the Iris theme Module Queue page WHMCS-27643 — UI Improvements for the Iris theme when creating Configurable Options WHMCS-27645 — UI Improvements for the Iris theme Confirm Password page WHMCS-27646 — UI Improvements for the Iris theme Domain Reminder Settings page WHMCS-27647 — UI Improvements for the Iris theme Products/Services page WHMCS-28802 — The cart API now rejects zero and negative add-on quantities WHMCS-28809 — Improvements for license handling when using PHP 8.4 WHMCS-28824 — Resolved incorrect order totals when the API v2 cart accepted negative quantities WHMCS-28840 — Corrected Check for Updates logic in PHP 8.4 Modules WHMCS-28457 — Resolved lost order notes and domain contact on Stripe redirect checkouts Version 9.1.0 (General Availability) Implemented WHMCS-27002 — Iris Admin Theme Preview WHMCS-27279 — Automatic MarketConnect Account Registration Maintenance WHMCS-25146 — Remove Unused Credit and Debit Note Number Incrementation Settings WHMCS-26154 — Improve Security for the Installation and Upgrade Process WHMCS-27300 — Correct Amount Column Sorting on My Credit and Debit Notes WHMCS-27464 — Improve Security for the Setup Wizard WHMCS-27465 — Add Description Label for Payment Methods at Cart Checkout WHMCS-27564 — Correct Automatic Update Failure When the Site Is Accessed Mid-Update WHMCS-28022 — Standardize Password Error Message Styling in the Client Area WHMCS-28033 — Improve Navigation and TLD Selection in the Getting Started Wizard WHMCS-28076 — Correct MarketConnect Service Management Actions in the Nexus Theme WHMCS-28077 — Add Missing MarketConnect Dynamic Service Commands to the Nexus Theme WHMCS-28113 — Improve Security for Knowledgebase Search in the Nexus Theme WHMCS-28158 — Match Generated Password Length to the Minimum Password Length Setting WHMCS-28166 — Correct OAuth Authorization Failure When Using the Nexus Theme WHMCS-28382 — Correct Handling of Multiple Upgrades in the Nexus Cart WHMCS-28444 — Show Billing Term Details in the Cart Item Price Tooltip WHMCS-28459 — Correct Horizontal Scrolling on the Mobile View Cart Page in the Nexus Theme Modules WHMCS-26564 — Correct Error Paying Invoices with Stored Cards via Stripe Dynamic Payments WHMCS-27903 — Preserve Assigned Shared IP Address on Package Change for Plesk WHMCS-28135 — Update Retirement Notices on the Admin Dashboard for PayPal Legacy WHMCS-28136 — Add Admin Area Warning for Outdated API Credentials in BitPay WHMCS-28343 — Prevent Paid Plan Substitution When the Free Plan Is Disabled for Nova Cloud WHMCS-28413 — Correct Password Field Display in the Getting Started Wizard for eNom WHMCS-28470 — Remove PayPal Basic and PayPal Checkout modules Version 9.0.9 (Maintenance Release) Implemented WHMCS-26614 — Improved caching of MarketConnect service data Maintenance WHMCS-28262 — Improved ordering of services on the admin MarketConnect page Modules WHMCS-27404 — Update to XML RPC protocol version to 1.6.9.1 in Plesk Version 9.0.8 (Maintenance Release) Maintenance WHMCS-27923 — Security Fix for CVE-2026-67399 Modules WHMCS-27404 — Resolved integration errors related to the Plesk server module WHMCS-27532 — Update Suspension and Unsuspension in Plesk WHMCS-27812 — Update Change Password in Plesk WHMCS-27908 — Security Fix for CVE-2026-67398