Hi there,
if you want your plugin approved, please change the following :
You have a possible race condition with other plugins OnEntityCreated. i.e. :
plugin create timer (L193/214); 2nd plugin is executed; screw up and kill the entity; Valve entity management is done (slot is cleared); just before timer is executed, another entity is created with the timer's arg's id; then timer execute on a bad entity with the same initial ID.
To correct this behaviour, you can use
EntRefToEntIndex and
EntIndexToEntRef, which are the ~~equivalent of GetClientSerial-GetClientFromSerial or GetClientUserId-GetClientOfUserId for clients.
(Not needed for approval) Also, if you want to optimize your plugin, you can change your "Format" for "strcopy"; which speed up string copies. You could also add some "else" before those "if" on L209 and L211.