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Can you try to fill title again? It might be that your title filled as auto form refilled and app might not recognize it.

tried it on a new browser and even a new computer,same thing

Oh found small issue ;) should be working now.

I am afraid it is not working(at least for me), I don't know, tried it on different PCs.

it finally worked, didn't get what was the problem, though.
thanks :)

Please reload page and try again, otherwise let's see who else has this issue with submission. Thank you!