I'm a forum member from a while ago (about two years), and upon making a new account and joining a Twinswords lobby, there were no swords.

This is in the beginner Twinswords lobby, back when I used to play regularly there were swords attached to the character's hands, which aren't there anymore... So where are they?

I've experienced this many times and thought it was just loading but maybe try asking others in the lobby about them being able to see the swords also

same happens to me... mabye it's just that the swords took up too much space in the toribash file and they had to just put hands

Some guys in the lobbies say that there was a recent problem with Twinswords that the mods are trying to fix right now, is this true?

It is, There are several rooms where the system is damaged maintenance are taking care of it.

The problem is that not everyone has the mod twinsword4fixed.tbm

Download it from here and then put it in data > mod.