The license was purchased at glavtorg.net and expired 280 days ago. With this license, I never took, because I did not work posts. The project had to do to another CMS. Now I want to try again, but the downloaded files can not be found.

HI, Andrej.

Thank you for contacting us.
After your subscription expired access to download section was suspended for your account.
We don't host outdated versions that was available for user at the moment when his subscription was valid.
I'm sorry but you'll need to renew your subscription in order to download latest version of JomSocial.

But there is a good news regarding this - renewals are discounted -33% so you don't have to pay full price again :)