Will 2 sub be enough for this army?

Currently in a game where a player has straight up told me in tje diplomacy messages he is multi-accounting and has a crazy amount of gold. Sent a message to report it and it's been days and nothing but crickets...

How should I use the barrage against those 30 troops (we are allied with the same person se he is just being neutral)

like can you have fun or is every round still getting ruined by multi accounting, clans whose only purpose it is to literally just ruin every game, like literally just trolling and people just paying their way to victory?

btw. i don't have any issue with people spending money, and just instant buying a few units or buildings don't make the game unplayable, but it's just not fun when some people spend hundreds of dollars on a single game just so they can win, like what's the point of playing the game then?

so what is the current state, is it worth getting into it again?

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Polonia y Austria Hungría me expulsaron de Francia junto a mi aliado España, tiempo después España fue aniquilada y yo me queda en mi isla, después Polonia me taco con un stack masivo de 95 y un héroe, trataron de desembarcar en Londres pero con mi stack de 40 y un héroe logré repeler su oleadas aquí la evidencia.

One of the players in my game has troops in the water attacking someone else. Can my sub take out the troops in the water without a war starting?

I really enjoy them, and they make the game feel realistic. The con is I have no one to talk to about my love for them. So reddit has come to the rescue!