The project manager should have generated a contingency plan first to alleviate the impact of this issue prior to deployment where a major malfunction resulted in an inoperative product condition during a code implementation. A contingency plan is a plan that outlines alternative courses of action or strategies to deal with potential problems or risks that may occur during a project. A contingency plan can help to prevent or minimize the negative impacts of unforeseen events or issues on the project objectives and deliverables and ensure business continuity and stability.

This is where an existing application that is highly utilized by clients is moving to a new release, as it involves deploying and operating it in a live environment. Reference = CompTIA Project+ Study Guide1, Chapter 4: Project Environments

Regression testing is a type of testing that is done on an existing system to ensure that the previous
functionality still works after a change has been made. Regression testing is a process of retesting or verifying
that a software system or application still performs as expected after it has been modified or updated with new
features, bug fixes, patches, etc. Regression testing can help to detect any errors or defects that may have been
introduced by the change and ensure that no functionality has been broken or degraded.

A task board is a visual tool that displays team progress for stand-up meetings. A task board usually consists of columns that represent different stages or statuses of tasks, such as to do, in progress, done, or blocked.
Each task is represented by a card or sticky note that can be moved across the columns as the task progresses.
A task board can help to facilitate communication, collaboration, and transparency among team members and stakeholders. It can also help to track and manage work flow, prioritize tasks, identify bottlenecks, and resolve issues3

The project manager should use synchronous communication methods if they prefer to have immediate contact with team members. Synchronous communication is a type of communication that occurs in real time and allows for faster response times and more interactive discussions. Examples of synchronous communication methods include phone calls, video conferences, instant messaging, and face-to-face meetings. Synchronous communication can help to build rapport, clarify doubts, and resolve issues quickly among team members.
Synchronous communication should be used when the project manager prefers to have immediate contact with team members. Synchronous communication allows for real-time interaction and feedback, enabling faster response times and more interactive discussions. Reference: CompTIA Project+ Study Guide Section 3.1.3