If you can not automatically update your license through the AMS GUI, you should ask for a license.txt file to be sent to you ([email protected]).
The license.txt is usually placed in your AMS installation directory on Windows and Linux.
For example, C:/AMS2023.101/license.txt on Windows.
On Linux, the location is defined by the SCMLICENSE variable, which is typically set in amsbashrc.sh to $AMSBIN/license.txt while AMSBIN is typically set to something like $HOME/AMS2023.101
On Mac, the easiest is to just drop the license.txt on your AMS app. If you want to copy it manually, the default location on a Mac is “$HOME/Library/Application Support/SCM/license.txt”