While I understand where you are coming from, I do not understand why after he thanked you, you are now expecting him to reply to you right away. I think it was good that he thanked you. But try to not expect him to reply to you immediately. He is a CEO, busy, and has a lot to deal with. You are not suddenly his only agenda in the day. He may probably reply to you when time is right.

I also think ETN team/ CEO did well by thanking you because they had already known about this issue since about 2 weeks ago when NEXT Exchange notified them about this block issue. You can verify this if you contact the Next dev team or if you look over the Next telegram group where there was already a talk about it. That is why NEXT delayed their exchange launch as well. However, ETN team is just slow, very slow.

Also, Richard had already mentioned about this block in one of his earlier videos last year, maybe that's why they didn't think it's a big deal and decided to thank you anyway.

Otherwise, I personally thank you for bringing this up to the public since it'd speed up the fix.