This is one of the most submissive posts I have ever came across.

As the name suggests "MainStream" the term is self explanatory!Set of quality standards set by the less deserving folks makes it easier for those with fewer skills .However the people in this category have enough resources either hereditary or enough connections to out smart the skilled ones .There is nothing much we can do about it .

Hi! Could be a bit more specific here on how the nodes are behaving to this? Usually the bans are generated or called by default if there an activity triggered which does not have any error handling mechanism.So if your nodes are trying to inject an unauthorized piece of code which tries to modify the sockets the activity is dropped right away which is good I suppose .However if you could elaborate a bit more on the issues or check with your nodes you could debug this .

Hello ! Considering the way special characters are processed in different countries has everything to do with their statistical measures .Basically, one does not have any advantage over the other ,its just the set of quality standards they tend to follow . For example, many of US based companies suggest while writing your name in the  Resume,you must make sure its centered aligned  but those in Europe suggest it should be aligned to the left .So its completely based on your quality standards.To cure this problem I could suggest a few measures :
1)When converting  btc make sure you've choose France as your country (if you've set your google to its default location then dont worry it should do it for you)

2)Try to use as many web sites based in France because they'd follow the same set of standards

3)Manually just replace the comma with the dots which I think seems much easier .