Sanderlibg License time?!

Hello, im new in theis forum and to Sandlering and wantet to know, how its possible to let the bot running longer than the session Times.

I saw that you can enter a key, but i didnt found any information about how or even how to get a longer seassion since i tested the bot now for a few hurs and was wondering why the bot was just shut down after i came back.

So is there any wy to do so or to get a key? Is it paid or free?

Its free, you can download a free version with unlimited session time from Releases · Arcitectus/Sanderling · GitHub