My pair of Rams that I bought last weekend laid next to the front glass wall of the breeding tank mid week in a hollow they made in the substrate and I was overjoyed

Checked this morning and the eggs are gone with no sign of a fry anywhere. I assume that this is the first time that they have laid, is it normal that they will or can panic and eat their first set of eggs? I'm also intrigued to read in this months new PFK magazine where the questions are answered that there is one about Ram's that is spookily relevant to my experience. It states in the reply that something must be wrong as rams never lay next to the front glass and hardly ever in substrate hollows, choosing flat stones instead.

I had flat stones in different areas of the breeding tank but my experience is similar to the one mentioned. Has anyone bred or who keeps rams able to advise me?