At the moment, the Store Manager supports all symbol charsets if your database was set up in the correct way.
Please check if you select the correct File charset at the first step of the import wizard (Autodetect or UTF-8) > https://www.screencast.com/t/ZWPoeAGxDf
If the issue will remain, please contact our Support > https://woocommerce-manager.com/support-center/contact-us/
thanks! And how to import XLS file? or convert it to CSV (,)?
Apr 17, 2020
The Store Manager can handle Excel files. Here is the article > https://woocommerce-manager.com/useful-articles/woocommerce-product-management/woocommerce-import-step-by-step-tutorial/how-to-perform-woocommerce-excel-import/
Note that the Store Manager requires Microsoft Access Database Engine installed in order to import an Excel spreadsheets.