The culprit could be the trusted storage. You need to delete the trusted storage. If it's a 60-days ArcGIS trial you are using, then you should be able to authorize it again.
Please follow these steps:
1. Close all ArcGIS Applications.
2. In Windows Explorer, navigate to C:\ProgramData\FLEXnet. Delete all the files in it.
3. Authorize ArcGIS Advanced (Single Use) license using the same EVA********* code.
Check if the licenses are working now.
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