Problem importing CSV file

Hello again!)

I have questions about CSV import again. Two questions:

1. I’m importing this file:
   

   

   11.jpg1920×1080 947 KB
   
   As you can see in the first cell of the first field there is a value other than 0. The import is successful. However in the database table I see this:
   
   

   12.jpg1919×907 260 KB
   
   For some reason, the first cell of the first field is zeroed out. All other data is imported correctly. What could be the problem?

2. In CSV file I insert the header:
   

   

   13.jpg1920×1080 936 KB
   
   As you can see, it is inserted correctly and coincides with the name of the import fields in the import step in Wappler. Also in Wappler I put a mark that the file contains a header:
   
   

   14.jpg1920×1080 451 KB
   
   However, when importing, I get an error:
   
   

   15.jpg1920×1080 305 KB
   
   According to the text, in step import fails to find a field u_cod in the file. But it is there. What could be the problem?

Thank you in advance for your help.