It may be a phrase thing
Go to Appearance>Languages>Phrases
Check out: not_open_for_further_replies
And change the text
XenForo Support
Changing the "Thread Status" Message
Submitted by Winninq, 24-07-2018, 01:07 AM, Thread ID: 96416
Thread Closed
RE: Changing the "Thread Status" Message 26-07-2018, 05:33 PM #3
26-07-2018, 05:33 PM
#3