I used Nexo to earn interest on my crypto "investments". I downloaded my Nexo "transactions" in a CSV file. I downloaded the "Custom CSV template" and carefully/painstakingly migrated my data into the correctly file.
When I attempted to upload the CSV file it said that my headers were incorrect.
Bearing in mind i did not edit the column headings at all. I thought, maybe it's because i changed the column width. I tried again. Failed due to "incorrect headings". Then I considered that it might be due to the interpretation of the CSV in open office.
I tried uploading the "Custom CSV file" just to see and got a "Malformed CSV File uploaded. " error.
I just used notepad to open it and there were definitely "tabs" added into my csv. I massaged the file and replaced them with commas. This time I got the same "Malformed CSV File uploaded. " error. so I guess i've made progress.