Thank you so much! This was a quick 3-hour game made for another jam (three hour Trijam), and I submitted it here too because at the time I was being encouraged to submit games to multiple jams where applicable, especially Decade Jam (I no longer really like doing that).
I enjoyed making it, as I've always been obsessed with negative space games (I have a few more on my profile, like Doppelgate). I want to get back to making them someday, but in recent years I haven't done any online public itch games or jams because I've been busy with my first baby, and working in-industry at House of How on Minecraft and Invincible stuff, etc.
As for a level with no rings/exits where you were confused, you probably reached the end. The final level was drawn with 'You Win!' in the background using grey blocks, as I recall, and I remember a lot of people not seeing that blocky attempt at text in that level and being confused. It's a short and simple game, given it was only three hours of dev.
Thank you so much for playing and commenting! I appreciate your kind words. I'll try to return the favor when I'm back home from traveling.