Losses in wake of spread ans limit on position-closing

In this early March, I began to trade on NAG Markets . During that time, due to the severe slippage, the order I pended at 1573 slipped to 1566, causing to losses. The platform responded that the gap was to blame. In addition, closing position was unpractical since the quotation had been closed, which didn’t happen on other platforms. Loss was caused by unavailable position closing or locking. The platform blamed on my mere fund. If it had no problem, I couldn’t have suffered such losses.