HELP, while we followed the instruction for the submission steps, We had some problems uploading the file into an HTML5 file... Is there any possibility that someone could help us by teaching us to upload the game correctly? And can we have extra time to do it right?

Please read the instructions carefully

More specifically:

1) Ensure you didn't break the CSV. For a quick confirmation, open it with notepad, it should be separated by tab, not commas

(If you broke the file, carefully paste your translation over the F column in the step below, using Excel)

2) Download the original zipfile, extract it, overwrite the original CSV with yours, ZIP THE WHOLE FOLDER AGAIN, and upload it as detailed on the guide