Watcher license not valid

Hello,
I installed ELK stack and later installed the watcher. It works good until today. I think ı use with trial license.
how can i do this license valid ? Do I have the license buy ?

Thank you

Hey,

the trial license is valid for one month. You need to purchase a subscription in order to get another license. See the watcher docs.

I am happy to get you in contact with our people, if you tell me where you are based.

--Alex