I understand the frustration caused by the delays in the orders with ARGO Blockchain. However, I would like to make several clarifications that have been mentioned by David and Peter in the other threads.
This instrument is traded via the trading service SETSqx, which provides execution of orders only several times a day, during the official auctions. Our intermediary IB uses DMA for the order routing with this instrument. This means that orders could be filled (if there is sufficient liquidity) only during the auctions.
There is a possibility to fill the orders using Market Makers, but at the present moment, we can offer only DMA execution. We plan on improving our service in this respect in the future. You can learn more about the SETSqx trading service here.