Yo, Isabelle looks great man. Yagi the Goat stuff reminds me of Sonic the Hedgehog, more specifically the classic Saturda morning cartoon. Loved that stuff when I was a kid.
I've seen part of your progress on Discord, though it's tought to keep up on Discord, feels like some sections move every 10 minutes while others barely move in weeks. Hard to follow up with everything going there so I'll usually stick to the term I'm working on plus a few select threads. Glad you had a good time at the beach!
It really takes some dedication to do a piece like this, many people will just take a glance and think it looks cool, but I see you took the care to build most pieces individually with great care, like the phone or bag (maybe a 3DS soon? xD). The sheer effort that goes into building all this is impressive.
You're really getting better at thse organic volumes (legs, hands, face), and the shirt looks a lot better after the redesign!
As for the sign in thing, as @mitsuki-youko said, it seems to be a thing with the site. I use mainly Chrome, but just the same to get around "signing in" I just click on the "forums" link up top and that will somehow magically log me in. Must be something with cookies. I saw someone opened a thread about it on the help section but I don't think anything came from it other that to keep using the workaround.