From what I've been able to tell, most if not all of their members are MLs, and it's generally considered an ML party, but they don't advertise a specific tendency. IIRC they started more or less as an ML split from a Trotskyist party. (Now I'm not sure if it was PSL or FRSO being referenced lol, but this was about PSL.)

I've also had issues trying to join. I did sort of a phone interview, and the guy wanted to meet me in person to continue the process. He suggested attending one of their protests and we'd meet up there, but they don't get announced publicly far enough in advance for me to make it. My last message about trying to arrange a meeting didn't get a reply, so who knows at this point lol