Hi! Thanks for the feedback :D
Please try to really heavily move the arms for a couple of seconds, the movement threshold for the next instruction is a bit high, hope it helps!
I tried moving them all over the place, at the same time, and moving them individually, for 10 seconds each. But still nothing happens.
I tried in a Chromium browser (Vivaldi) and was able to get unstuck. Can confirm that in Firefox, nothing worked, tried for minutes and after refreshing the page.