Upload CSV Error Code: incorrect number of columns

I’m the OP on this thread, and admittedly I haven’t used HS much since this post, that being said I do need to use it again, and I think I’m having the same issue I was having back in Feb 2019. Going through this thread and reading my old emails I’ve been able to open my .csv file with notepad but I don’t know how to spot the errors. Specifically, how the commas separate the columns.
Can I get some help with this again?
Many thanks…Nagazzi