Fields from spreadsheet is missing on Looker when I create a data source

[MARCELOTOSCANO]

Hello Colleges

Please! A little help!

Whatever I do, my Looker doesn´t show all fields from my spreadsheet. I`ve have deleted empty rows, cleaned formats, cleaned Looker cookies/caches, made headers with no special characters and so on.

What can I do further ?

Please! Thanks a lot!