Serious lagging and slippage. The internet speed is too slow.

Slippage is serious what I do is Martin of 0.17 for one order on May 16th. The order was not placed in time, resulting in two more orders. After that, the position cannot be closed, and the second or third time cannot be closed either. It resulted in a serious loss of $8,000, and the platform said that a single order of 0.17 would give me $500. I am not a simple order, he is a heavy-handed Martin, so lead to serious losses.