As per screen, I do not find the function to fix the decimals correctly. In Italy the classifieds websites have all the price in this way €300, €3,000, 30,000, €300,000, on the topic currently come out the two final zeros that are too much. How do I fix them? I saw in the settings menu something about the decimals but the price is incorrect.
 

Read documentation:
https://doc.osclass.org/Change_the_currency/price_format

Check osclass forums:
https://forums.osclass.org/plugins-20/currency-symbol-from-behind-the-price-to-before/msg101523/#msg101523