or am I just pointing out that the game was played on HW?

the game was played on HW, but that doesn't mean it will be counted... you need to duplicate it on the resources you mentioned.

I would like games from Dream to also be counted
but I don't want to bother the opponent to register with us and confirm

this won't work - you need to agree with your opponent in advance about the possibility of duplicating reports on those sites for which you want to play...
All the listed sites, including Metrolend, are separate, and you can play for the sake of one or several sites... the main requirement for counting is the registration of both players - and the presence of the report and its confirmation.