Apart from the fact that having alts is allowed on the forum, what is forbidden or at least frowned upon is certain behaviours with alts.
It's not forbidden to have several accounts. As long as they don't abuse a campaign, everything should be okay.
I check that both of them applied in the same campaign few times e.g. Whirlwind, Stake etc, but both of them didn't get accepted. Some people think this is form of cheating because they have intention to participate in the same campaign, although we don't know what will happen if they both get accepted.
However the most important point is whether they both are alt accounts, it's quite hard to find the connection.
One is an Indonesian and other one is Filipino.