The project manager should set up a meeting with key stakeholders to clarify requirements. Clear communication is essential in project management, especially when working with remote teams or teams in different countries. By engaging key stakeholders, including the development team and the client, the project manager can address any differences in interpretation and ensure that everyone is on the same page regarding the client's needs. This proactive approach can help prevent rework and delays in the project schedule.
Reference:
1.How to manage Client Expectations in Project Management: A Comprehensive Guide
2.Chapter 4: Understanding and Meeting Client Expectations - Project Management
3.Client Management: How to Win and Retain Clients - ProjectManager

In the context of a project that involves new technology and an experienced Scrum team, the most suitable estimation technique is using story points. This method allows the team to leverage their collective experience and familiarity with each other's work to estimate the effort required for tasks relative to each other. Story points reflect the complexity, effort, and uncertainty of the task, making them ideal for projects where the technology is new and exact estimates are challenging to produce. Since the team has a history of successful collaboration, their established velocity can help predict how quickly they can work through the backlog.
: The use of story points is supported by Agile methodologies and is a common practice in Scrum teams for estimating work effort. This approach is detailed in the Agile Practice Guide, which is a complementary document to the PMBOK Guide, provided by PMI for understanding Agile practices in project management. The choice of story points over other estimation techniques is also consistent with the principles outlined in the PMI's Professional in Business Analysis (PBA) Reference Materials, which emphasize the importance of leveraging team expertise and past performance to inform project estimates.

In situations where a specialist's on-site presence is impeded by travel restrictions, leveraging virtual technology to facilitate the specialist's guidance remotely aligns with the PMBOK Guide's emphasis on project communications management. The PMBOK Guide acknowledges the importance of communication methods in project management, which includes interactive, push, pull, and virtual communications. Virtual sessions are a form of interactive communication that allows for two-way exchanges of information, making it an effective alternative when face-to-face interactions are not possible. This approach ensures that the project team can still benefit from the specialist's expertise without delay, adhering to the project's time constraints and maintaining progress towards its objectives.
The PMBOK Guide and the PMP Examination Content Outline provide guidance on project communication methods and the use of technology to facilitate communication when traditional methods are not feasible12. The Professional in Business Analysis Reference Materials also support the use of various communication channels to ensure project continuity3.