one question upfront:
Are you using LMS Amesim within an Educational Bundle or have you downloaded the LMS Amesim Student Edition?
I supposed you have the LMS_LICENSE environment variable set. Probably because you had also another license of LMS Imagine.Lab Amesim on your machine.
Can you check it?
If this environment variable is set, try to unset it and to restart the LMS Imagine.Lab Amesim.
I am also facing some installation issue. Can somebody tell me how to create a new request in PLM Community. I am not getting that option. I can only see others questions.
if you go to "Forum - 1D Simulation Solutions" you'll see the "Start a Discussion" button. (Yellow circled in the screenshot below)
There you'll start a new topic.
Please have a look if another post already answers your question.