Title says it all.
When I press Ctrl + F3 nothing on the top left screen pops up to notify me if it's recording or not. It also doesn't when it's on automatic.
Garena detections for League of Legends are very difficult for us to make, so it's possible that the detection is either not up to date or it no longer works. We can attempt to look at the issue for you though. I saw the ticket you made regarding this issue and have requested log files from you.