Hi Nam, Maximo used to be, and as Manage I'm sure still is, very sensitive to how do you open new tabs. Having said, the key question is here is how did you open new tab to get this error? What I mean is what was the actual URL you start with when new tab gets opened? Does it happen every time...
You can find your quantum instances page here-> https://quantum.cloud.ibm.com/instances
I encountered the same problem and reported it. A new Box folder, for free editions distribution, is under construction and will be available soon. Meanwhile I could download an installer from Academic Initiative following the instructions of CPLEX Optimization Studio is free for students and...