Hello, I had tried submitting my project earlier, but my browser forced me to refresh the page when I thought I had submitted it.

My game is https://thisisnotdalton.itch.io/good-cow-bad-cow

Is it still possible to submit?

Best thing to do would be to get on discord asap (no more than 2 hours after the deadline) and let the leaders know what happened, based on the FAQ on the jam homepage.