Countries officially designate specific symbols to separate thousands...and the symbols vary.

In the United States, the symbol is a comma (,). In Germany, the symbol is a period (.). In Sweden, thousands are separated by a space. Thus, one thousand and twenty-five is displayed as 1,025 in the United States and 1.025 in Germany, and 1 025 in Sweden.

Precoro currently only recognizes the American (,) comma usage. 

Follow this link to turn it on/off - Basic Settings --> Misc tab.