@Thomas669 It's a tech problem on this site that sometimes responses disappear before or when you click on Reply. It has nothing to do with the content of your post. Those of us who are quite familiar with the forum will often copy the response we've written before we hit Reply, in case it glitches out. Then you can paste it in the reply box and try again.
It seems to happen more when you type lengthy things, that you spend time on. When I remember i copy first, because it will go the second time. Unfortunately it is the longer, carefully crafted ones you lose! Hitting send now before it goes .