It happened to me too, but it fixed itself it could be cache.
Try Ctrl F5 or Shift F5
IP.Board Support
Installing FontAwesome 5.0.3 on IPB
Submitted by 410, 20-03-2018, 01:49 PM, Thread ID: 80845
Thread Closed
RE: Installing FontAwesome 5.0.3 on IPB 20-03-2018, 03:28 PM #2
20-03-2018, 03:28 PM
#2