Used to have a format that worked on importing CSV bank statements, since the latest updates have had challenges with importing bank statements have tried the format as given in the guides but, still get the error The file you are trying to import is invalid can anyone assist with a template or correct format in setting up the CSV format.
It is not possible to identify your problems with the information you have provided.
I assume you have no other bank export option as csv is the least standardized so most unreliable.
A common problem users have is with their manipulation of CSV files in a spreadsheet before importing. They end up converting the file to an Excel file, for example, because they use Excel to view the export.