I guess, all are market orders, if the price touch a line, right? If so, whats the difference between sell stop/sell limit- orders or buy stop/limit in this tool?
A wish: A good enhancement in a next version could be the calculation of the lot-size in dependence of the free margin in percent. That means, I insert the percent of free margin, e.g. 1%,  instead the lots. The volume can then be calculated by this tool with this and the stoploss.

I have test this today in the DowJones Future. I receive on Buy and Sell orders "invalid stops" if the trendline is crossed. Have checked all order types. 
Can you support?

You are right, all orders are market. Four types of orders (Buy Stop, Sell Stop, Sell Limit, Buy Limit) were created to avoid uncertainties and accidental triggers. For example if you turn on the tool with setting SELL, but you set your trend line below current market price. In this case it can be several situatuans: you wanted that order was open SELL, you wanted that order was open when price touch trend line or you just incorrect set your trend line.
So if you turn on the tool with setting SELL LIMIT and set trend line below current market price it will be obviously that you are waiting touching of trend line with opening SELL order.