Sounds like you need a new demo license that is correct for your relate version
I generated the license yesterday. I tried again today with the other Relate+ license option available (https://license.episerver.com/public/GenerateDemoLicense.aspx), but I still get the same error.
Contact Episerver and let them give you one with correct version then I guess. I know I did that for some old licences that they didn't have support for at license.episerver.com
I am developing on EPiServer CMS 6 with Relate+. I have just downloaded a demo license for EPiServer Relate+ 2.0 and copied it to my test server, but I keep getting the following error displayed:
Current version 3.2.517.24 is older than required version 4.0.
Any idea what the issue is?