I added conversion and revenue columns to the script which can be found here.
This is the error I'm getting in the logs (the spreadsheet is updating fine with no issues):
TypeError: newValue.indexOf is not a function
at formatChangeString (Code:366:33)
at emailRow (Code:314:11)
at Code:285:15
at Array.forEach (<anonymous>)
at sendEmail (Code:284:17)
at main (Code:106:7)