Do you have any updates ?

The exact same thing happened to me earlier today, with exactly the same message. I realised pretty quickly after trying to log in to their website that something was fishy since nothing was happening when I tried to connect and I immediatly changed my password and registered the 2FA app. I also had an internet outage right as it happened, just like you. The people who got my infos barely had 15 minutes with the account before I managed to reconnect thanks to 4G connection. They moved my character from Ragnarok's Limsa to Spriggan's Gridania, but I still had my Gil and my gear. I only saw one connection from Ireland (I'm from France).

I logged off to prepare diner and to play another game with friends for a bit, and when I tried to connect back to FF, 1h ago, I had a notification on the mogstation saying that my account was suspended. I really hope this won't take long to recover my account and that I reacted quick enough. Hopefuly the suspension is due to the connection attempt from Ireland and not from RMT stuff, which I assume would take longer to investigate. I hope I can get ahold of someone from chat support tomorrow.

I feel so dumb. I've never been fished during more than 20y on the internet. Spread the word, they seem to be very active and the website is a perfect copy of the SE forums and looks very convincing.