[MeRcyLeZZ]

1- Disable zp50_hud_info.amxx in plugins .ini

2- Go to zp50_main_menu.sma and edit:

// Welcome Message Task
public task_welcome_msg()
{
    zp_colored_print(0, "==== ^x04Zombie Plague %s^x01 ====", ZP_VERSION_STR_LONG)
    zp_colored_print(0, "%L", LANG_PLAYER, "NOTICE_INFO1")
}

3- I think you can use client-side command "hideradar", but they would be able to turn it back on (maybe also do the alias trick to block it...)

4- Try this:

#include <amxmodx>

public plugin_init()
{
    register_message(get_user_msgid("TextMsg"), "message_textmsg")
}

public message_textmsg(msgid, msgdest, msgargs)
{
    new message[32]
    get_msg_arg_string(2, message, charsmax(message))
    
    if (equal(message, "#Weapon_Cannot_Be_Dropped")
        return PLUGIN_HANDLED
    
    return PLUGIN_CONTINUE
}