update 2.1 >> 2.1.2 alowed ?

[froggy]

hello
first of all, I would like to thank you for this fast and lightweight server.
I do run a full licensed 2.1 version on my Qnap nas, which is asking me to update 2.1.2

Can I do that within my 'outdated' license or do I have to upgrade/buy a new license ?

side question : is there a repository where one could download previous versions ? Typically, how could I reinstall my 2.1.xx licensed version if I have to reinstall my nas (as for now on only newer 2.2 versions are available) ?

kind regards
froggy