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Dear respected,
Based on the shared description, it looks like this issue happens recently as a sudden. In this situation, we would like to ask you check if the move action can be completed in other environment like a PC or browsers which will help to narrow down the issue to service cache or device side. And also, if other users are facing the similar scenario.
Move files and folders between OneDrive and SharePoint - Microsoft Support
We appreciate your understanding that sometimes the initial suggestions may not resolve the problem very soon. However, we can work together to narrow down and resolve the situation. So, please kindly provide more information to let us work further.
We appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Mia | Microsoft Moderator