Yes, 3 tsp is a Tbsp - so your packet had 3 tsp and mine had 2 tsp - and 3 of my packets had 6 tsp, which is 2 TBSP. When she told me this recipe over the phone she actually said 3 envelopes
and I proceeded to measure it for everyone when I posted the recipe.
I can certainly imagine if you only used 1 TBSP of gelatin the fondant would be a horrible mess!! lol I am very glad you got it resolved
Sentence phrasing can be a crazy thing!