Hi, 
I downloaded the simulator following the link[1] on the website. it runs as Version 2.5 instead of 2.6 as mentioned on the website. Is the link outdated? 
OS: Debian 11
JRE: 11.0.13+8-post-Debian-1deb11u1
[1]: 
https://drive.google.com/open?id=1xZzcMIUETv3u3sdpM_oTJSTetpVee3KZ