Hi Diego,
I can answer your questions for you:
A1. The suffix “x” is just the name of the chart on the tab and has nothing to do with the actual data feed. So no, you do not need to do anything. As long as the EA has been loaded onto the chart successfully then it is working correctly. Depending upon the EA and the time frame it may take a day or two before you will see a trade. If the EA you are referring to is one of the seven FTMO EAs then “yes” it may take a day or two before you see an open trade. The FTMO EAs are filtered such that they only take high quality trades.
A2. What the instructions say is that on the M1 chart you should hold the HOME key down until the chart loads the maximum number of candles or bars. You can tell when it is finished loading bars when the chart stops moving. Before doing this however please un-depress the “Scroll to the end of the chart” button and the “Shift end of chart” button located in the tool bar. Also press the “Zoom Out” button to zoom out as far as possible.
Also on the M30 chart do the same thing.
On the Mac here is the key combination for the Home and End keys:
Home Key: Command-Left Arrow
End Key: Command-Right Arrow
Hope this helps!
Kind regards,
Alan