I think I've allowed cookies (I added your itch domain specifically and itch.io in my filters), and I also turned off AdBlock in case it was that, and now it's saying 'no valid storage adaptors found'. That was on Chrome. I opened it in Firefox instead and there's zero issues. Yet another way I am getting my backside kicked to migrate to Firefox.
Anyway, I ran through a few of the options so far and it's really interesting. I'm looking forward to seeing more, and to doing a couple more runs (might call [redacted] a bastard this time).