I bought a subscription with a streamer a month ago for a 5 euro Paysafe. Now this subscription is over soon and I do not want to extend it. Do I have to do anything or is the subscription simply gone after this month?
It just goes away
No idea what it looks like when paying with paysafecard, but you could check your subscriptions for safety…
https://www.twitch.tv/...scriptions
… If it says that the subscription is renewed or when. If necessary, you can then also set that the subscription should not be renewed.