In the members’ center, if you paid for the extended download service, you can download older versions of StreamFab.
Overall because you are only being at 7020, even if I had downloaded links, which unfortunately the download history of my browser got deleted recently, I cannot get the links to past versions and would not know, even if I could, which version. So the extended download service is your best bet.
https://streamfab.com/member.htm?a=extended_service
You may also want to try clearing the temp folder, history, and cookies.
You may also want to delete the cache folder and even possibly uninstall and reinstall SF again.
In reality, 7020 is an older version, as we have had 7021, 7022, and just today, 7023.
Hope you can get it to work. If not, SF has contact forms at https://www.dvdfab.cn/contact.htm and https://streamfab.com/contact.htm. You would need to contact SF to get further help.