The Price Capping of orders by IBKR will not be turned off for any specific symbol or account. However, you can open a chat with IBKR Client Services or call the IBKR Trade Issues group to address the price capping of an individual symbol by temporarily adjusting the bid/ask spread parameters of the price cap algorithm in order to update the order.
Please remember that exchanges and regulators require Interactive Brokers and other brokers to impose various pre-trade filters and other checks to make sure that orders are not disruptive to the market and do not violate exchange rules. Exchanges also apply their own filters and limits to orders they receive. These filters or order limiters may cause client orders to be delayed in submission or execution, either by Interactive Brokers or by the exchange. Interactive Brokers or exchange filters may also result in an order being canceled or rejected. Interactive Brokers reserves the sole right to impose filters and order limiters on any client order. Interactive Brokers will not be liable for any effect of filters or order limiters implemented by Interactive Brokers or an exchange. Clients should understand the sensitivity of simulated orders and consider this in their trading decisions.