For round 1 what do u mean by a intro? I've seen many people giving summary, some gives character sketch and some give a short chapter? Are all of these acceptable? It can be summary or blurb including character sketch. Honestly whatever you think that is impactful which keeps the reader hooked.
For the banner which size is acceptable? The usual 500*400 something or anything is good? Yes, it's fine
I understand for round 2 : 3000 words but after that in round 3 is it 3000 to 8000 words or start 8000 again...because that will be quite vast it's 3000 to 8000
Well if the votes of the readers are not counted so will it matter if there's no vote! (I'm lazy ass) no issues at all
And if I exceed the word limit in round 1 then you said judges will just count it in the next round so does that mean the whole story will be on a single post or do we have to reserve posts? U don't have to reserve posts. You can write and post the link of the chapter in your index and end of each chapter so that it is easier for the judges to find.