can i ask any difference between these two version? which one should be use in my future work? because the same structure modal come out with different results
Both the versions you have mentioned here are very old and we do not provide any support for all those versions. I would request you to use the latest version i.e. STAAD.Pro CE version 22.06.00.138 for your future works. We enhance the program in every release. SO, updated latest version is recommended from our side.
can i have the installer link for the new version? because i am student now and actually i get both these from online one and my friends
You may try this link.
https://education.bentley.com/Products
https://apps.bentley.com/studentserver/home/index