IGNITE Fireworks Firing System - Firing multiple igniters per cue at the same time

A field test of the IGNITE firing system firing two clip-on igniters on one cue, plus advice on how to wire this up. Two is the maximum number of this type of igniter IGNITE's website suggests you should fire, but I press on and try three then four together.
If you're already familiar with igniters and how to wire them up, use the video chapters to jump straight to the field tests:
0:00 Introduction
0:29 Wiring Guide (strip & twist)
4:09 Wiring Guide (WAGO connectors)
6:08 Field Test - 2 Igniters
6:33 Wiring Guide (5m extensions)
8:09 Field Test - 2 Igniters @ 5m
8:45 Wiring Guide (3 igniters)
10:21 Field Test - 3 Igniters
10:37 Wiring Guide (4 igniters)
10:54 Field Test - 4 Igniters
11:35 Connectors and bell wire advice
Have you seen my in-depth first look at this new firing system? If not check out my CZcams video:
• IGNITE Fireworks Firin...
UPDATE: Since filming this I have purchased an official breakout board:
www.ukfr.com/q...
This is an easier way of doing this if you're using official igniters. I also fired FIVE igniters with no issues.