I am trying to upgrade my license to the latest to run 21.1. I am following along the instrctuion here: https://account.flexsim.com/ftp/FlexNetPublisher/archive/lmadmin/FlexSimLicenseServer_Upgrade.pdf
However, after getting the Fullfilment ID, when trying to return the license I just get WARNING: No License in Trusted Storage. How should I proceede to upgrade the license?