There are two problems in my wp edition.
How can I change dot to comma and opposite for thousands and decimals in online edit?
When I change both the delimiter , for example to use semicolon for both import and export, when I am trying to import there is failure message for importing in relation to the delimiter, How could fix it to avoid problems with the use of comma in the fields?
There is option "use German numbers" did you check that?
About other problem. CSV must be valid , maybe you should stick to comma and you google documents to check it. CSV downloaded for google documents is 100% valid.