Same here. Nothing has changed on my system in weeks. I can still watch Twitch and access every other client - Steam, EA, Epic - without issue. I've seen a handful of users report this same issue in Ubi forums but we're getting no constructive assistance from what passes for support from Ubi. Definitely remembering this experience when Ubi announces new products.

I tried this a couple times but no luck.

After speaking with Swanburrow, the quest advises to speak with Randvi. While Randvi has a cartoon dialogue bubble over her head and the celtic quest marker, pressing E does not initiate dialogue with Randvi, prevents the quest from being completed and essentially blocks any further game progress.