At first I had an order but now it is not coming because of what?
Maybe because you don’t provide enough information?
This post makes no sense because you didn’t bother to put in any actual info or context - perhaps because you assume that because you know, we know. While seemingly a rather fashionable approach, it will chase away better, more experienced people.
Feel encouraged! I had given 2 custom offers last week. Big orders! I was worried because I got no response, but I just waited. This week one customer accepted my offer and the other has just messaged me to say he is ordering next week. This don’t always happen.
Now, don’t bug the buyer. If you haven’t give enough information you can message him, but I would just wait. Not every interested buyer will use you.