StepMania VS Love Live! School idol festival

Hey guys! Super new here. I have a pad that I'm trying to use with StepMania for my PC, but every time I download StepMania either from the official stepmania.com site or the github, it says "virus detected" on my Windows (ASUS). I'm genuinely getting nervy because of this but I would really love some help!! Thank y'all <333. Source: 12 months ago

i'm guessing I have 5.0 and I downloaded it from stepmania.com or something like that as I remember. Source: almost 3 years ago

I very vividly remember there being a Nico UR where she's wearing a yellow cardigan. It's sorta like her initial UR but flipped and she's doing more of a sassy pose. The closest card I can get to it is her Animal SR. When I check schoolido.lu though there's absolutely no trace of any cardigan Nico UR. Has anyone else experienced something like this? Source: about 1 year ago

Here is all the SIF cards, this is the card in question. Source: over 1 year ago

Hey OP. When I had forgotted my account info I emailed info-schoolfesta@klab.com and they responded first thing in the morning (JST). They will ask you to verify your account details like your in-game name, rank, game id etc. I update all my information on schoolidolu so it was easier to backtrack. Bonus points if you have any receipts from that account, the more information you have the faster it is for you to... Source: over 2 years ago

I can see the cards on schoolido.lu and in the album but I can't figure out how you get them in the game? They're super cute... Source: over 2 years ago

Unfortunately, the way to link your schoolido.lu is missing in the import page so I can't load my cards. Source: about 3 years ago