Welcome to the Community, @mohammed2. I'd be glad to help with importing bank account statements.
Just to clarify, are you using an Excel CSV file to import transactions into the German company? If so, there are certain formatting requirements for a successful import of bank transactions. One of these requirements is to not use commas to separate thousands, which should the file contain them, would explain why figures greater than 100 are not recognized. Additionally, many countries use a comma to indicate the decimal place, which could cause numbers to be rounded up by a thousand.