The advanced function is not at all forgiving. If just one line is
wrong (eg missing a number) it will just give you an error message. I
would double check that each line of the the spreadsheet is correct ie
word:number
You could try pasting into a simple text editor like notepad to check
it all looks ok befiore pasting into Wordle. If you paste it directly
from excel it puts a tab character between each columns text, but
wordle then ignores this character and reads it normally.
It is certainly working for me now (4:46 pm UK time, 2nd Oct)
You could try pasting this text and see if it works for you (it does
for me)
tera : 100
giga : 81
mega : 64
kilo : 49
milli : 36
micro : 25
nano : 16
pico : 9
femto : 4
atto : 1