We have done the Czech translation. And for free, we put it out. And one of the hosts of one of our game shows (who has friends in the translation group that is supposed to do the "official" translation (it's in quotes because if it was official it would come out on release)) says we're violating the EULA, I've read it several times and I can't find what we're violating it with. And when we ask him for a direct excerpt, he tells us to find it ourselves. I've re-read the EULA and it doesn't look to me like we're violating anything. Is anyone here more observant? Who can find me anything we might be violating? Thank you
Keep demanding they cite the specific part of the EULA you are violating and how what you have done is a violation of it.
Only when they demonstrate you are committing ILLEGAL activity and that they are taking LEGAL ACTION that has been sent to you should you be even remotely concerned.
EDIT TO ADD:
For any claims they make, demand documentation backing it up.