heya, your lockouts are configured properly.
lockout ui should not appear after completing a purchased event.
lockouts are given to automatically spawned events.
custom monuments require a monument marker and building/monument topology to cover the bounds of the entire monument or it will not be blocked properly. if events can spawn partially inside of monuments then this is why.
you have 5 workarounds:
ensure it has a monument marker, seen by a visible name on the in-game map. if it has this, then only its topology needs to be fixed. this is not ideal for your current wipe.
block them using Block Spawns At Positions in the config. next update will let you block by grid as well.
spawn cupboard.tool at the position to block RB events in that area. this is the easiest solution.
allow players to reset their buyable cooldowns by using /buyraid reset when Reset Cooldown Costs are enabled. not ideal. #3 is the easiest solution.
increase Extra Distance To Spawn From Monuments beyond 100 meters, but that's not ideal as it affects all monuments, and it's not recommend to set this above 50 for that reason.
there is no way to bypass a buyable cooldown being set when using /rbe despawn. I can add an option for that in the next update.