Problem creating GAs with multiple keys

did you put one key in one row?

You have to delete the space afterwards, for example
xxxxx-xxxxx-xxxxx(space) <-- delete it
xxxxx-xxxxx-xxxxy(space) <--delete it
Hope you can understand it

It sounds like a formatting problem (spaces, <CR>, or commas) between the keys.
You may have inadvertently copied some hidden characters in your paste.

I did it exactly like I've been doing it all time: I had them in different rows, and i even tried deleting spaces. Didn't help ... I also copied the hole thing to a text editor to check for hidden characters, but didn't find any. And it accepted the keys when entered one at a time - even when I kept the spaces in the end. I copied and pasted them, so there were exactly the same characters in there.

I just tried a big list of keys, no problem here... I wonder if there is some invisible character in one of the keys (like a tab), or if the - is not a normal - but an em-dash or en-dash instead

The only thing I can come up with that changed to the GAs I did before was a automatic windows update just today. But I'm not sure how this could effect coping and pasting ...
Well, if it's not a problem others have, too, then I am probably going to have to figure it out when I do my next GAs ...

Need to remove space between the key and theres no issues for coping and pasting, I did that too .... if you cant do it then make it into gift and when giveaway ends, insert the key 1 by 1 :D