Only UnrealIRCd 6 is supported. All previous releases, such as 5.x, 4.x and 3.2.x are end of life.
For more information on current and future releases, see https://www.unrealircd.org/docs/FAQ#What_is_the_current_version_and_when_will_next_version_be_released.3F

We really appreciate it when you report bugs and feature suggestions here, this helps us to fix issues and move UnrealIRCd forward. If you are in need of support, however, then please use the forums https://forums.unrealircd.org/ or IRC Support channel ircs://irc.unrealircd.org:6697/unreal-support instead. Also don't forget to check out our excellent support resources:

• Documentation https://www.unrealircd.org/docs/
  
• FAQ https://www.unrealircd.org/docs/FAQ