Thanks for your kind words!
Unfortunately, ITP is hopelessly outdated. It was created for a very old version of the game and is no longer valid for the current version of TE. Just ignore it =)
(you also use an old version of ITP -- 1.0.3, and the latest version is 1.1.1)
I'm also going to delist the calculator from Google Sheets because I get spammed with edit requests lately for some reason I don't understand. If you still need it, you can download the archive from the first post of this thread.
Since I'm here, I want to say hello to everyone who still remembers me. I don't play the game, and I'm not going to return. Although TE is not great in my opinion, the community is wonderful, and I miss you guys very much. I hope you and your families are healthy and well. Cheers!