But how... Even the current version of MetaEditor complains when the template parameters count is wrong. But Some of the parameters are not just a regular values, and maybe this is what the oldest MetaEditor can't work with. Also at row 470 we have this:
virtual void _execute_() = 0;
... which is fine. Will your MetaEditor understand it like this?
virtual void _execute_() = NULL;
Oh, I think I know why this happens and I will go to fix it now. It may take a while.
For projects with only few blocks it might generate bigger files than before, but for bigger projects it makes them smaller. But it was not only because of the size, MetaTrader does not complain when an EA is megabytes. In general, it's better when a code is written in OOP style and I wanted to do that for a long time. Although, now that I did that, I can't say that I really like this style, it's probably even harder for somone to understand what is going on in the code.
http://prntscr.com/gdnfqk
This is what I got. From what I see, all my pending orders should be opened when ATR is lower than 0.002 for the current candle and the previous 2 candles... which is what I see.
"Once per tick" is not needed.
Ok, but still, the EA will receive ticks and only do something because of that. If there are no ticks, nothing will happen. The problem is that ticks does not come in regular periods of time, there could be period of let's say few seconds without ticks, and why not more than a minute? So you can easily miss those "Time == 10:25" moments.
We can detect the closing of a candle accurately if we use that "Timer" event. But again, we will have the same problems with the ticks in the backtester, because the Timer event doesn't work like in the real life when backtesing. So I think it's much simple to just do everything in the beginning of new candles.
I know this doesn't answer to your question the way you want, but... modify the indicator itself to do that 
All colors are available here: https://www.mql5.com/en/docs/constants/objectconstants/webcolors When you need them again, just search for "Web Colors" in the documentation.
All color constants start with "clr", but in MQL4 you should be able to use only color names, for example Yellow instead of clrYellow. Initially "clr" didn't existed in MQL4, but they used it in MQL5, so then they also added "clr" in MQL4.
Double click on some "Buy now" block and then on the "Money management" selector
I added this, but I'm not very happy with it
You know why I didn't added this? Because it's not only this yellow color, but all the rows below it also have some colors. And if I add the ability to change this color, people will start asking how to change the rest of the colors, possibly for each row independently This is of course possible, but you know... It's better to make a block to be simple and then upgrade it when needed. Back in the day I made some features that then I decided to remove, but removing is much harder than adding.
The term "group number" is only used in the EA builder, because I think newbies can better understand it, but in reality this number is pretty much the same as the Magic number. And no, you can't change the magic number of a trade. Also, the Comment of the trade cannot be changed by you. The only things you can change is SL, TP and Expiration (for pending orders). And this is not because of fxDreema, this is how things are in MetaTrader.
I hope you don't expect those blocks 7 and 12 to work, because they are disconnected 
Look at the project options
I think I'm gonna add some option for this, because people are asking me for this from time to time. I still don't understand why they want to remove it
I tested this block and it looks to me that it works. But are your Alert blocks actually get triggered?
It sounds to me like you want to use that "Start" option.
But you are also talking about broker spread. If you want to switch between Ask and Bid prices, you can do that in the block as well in that parameter "Reference price"
I think this is simple. Put few Condition blocks and configure them with these values. But I guess that something else doesn't work you and I don't know what
With "Draw Line" you can create trend line, but first there must be a way to detect those highs and to get their Price and Time values. This is more complicated and I think it's better to find some indicator that does that by itself.
I will take a look at this. Now I use "#property strict" in the output code and sometimes values appear like that, but eventually I will normalize them all
What if you detect that with crossover (Candle Close x> numeric value 20)