I don't believe you were honest at all. I believe you did not ask permission. Your behaviour in other posts across these forums indicate the sort of person you are - arrogant and untrustworthy in my opinion. Your review, which is still there, is pathetic. It's now buried by the myriad of positive reviews from others. Frankly you're a disgrace and I hope other developers refuse to do business with you.
Single use. The license is granted to you alone. You may not redistribute the files in whole or in part.
So you deny giving the addon files to your developer?