❓ Why can't players hit each other right after a round starts?

#Answer

This is almost always caused by EssentialsX's own post-teleport protection, not PhoenixDuels. When a round starts, players are teleported into the arena, and Essentials' teleport-invulnerability setting (in its config.yml) grants a few seconds of invulnerability after any teleport, including ones performed by other plugins. PhoenixDuels has no way to bypass this - Essentials doesn't expose it through its public API.

To fix it, lower or disable it in Essentials' config.yml:

teleport-invulnerability: 0

Note this setting applies server-wide, not just to duels - it also protects players who teleport via /home, /warp, /spawn, etc.