Due to licensing issues, MATLAB is only available on Purdue's campus. This means only computers with Purdue IP addresses can use MATLAB. Purdue staff and students cannot run MATLAB on nanoHUB from a computer with an IP address outside Purdue's campus block, even when running a workspace.
For Purdue users working off campus, an option is to use VPN to access the Purdue network and then they will be able to run MATLAB. For further information on how to use VPN, see the following link:
An alternative is to use Octave. It's mostly compatible with Matlab, and has no IP restrictions.