Why can't I repair or upgrade my walls while my base is being raided?

When your base takes damage from siege weapons used by players not authorized on your Tool Cupboard, a temporary effect called Raid Defense activates.

• While effect is active, you cannot upgrade building pieces (wood to stone to metal) or repair them with a mallet.
• This applies only to the specific element that was hit - other parts of your base remain fully repairable.
• The block lasts for a set time after the last hit.
• Once the timer runs out, you can repair and upgrade normally again.
• Your own teammates cannot accidentally trigger this - it only activates from damage by unauthorized players.