Yes, all Downloads and Uploads are both counted into your monthly quota.
So if you download a 1GB file, and then upload a 1GB file, you are already using 2GB of your data transfer quota.
Did you know, this forum has a Hire a Pro category, where you can post your request for off-site specialised help on other platforms (video call/screenshare/private messaging/etc.)? This may help you get your issue resolved faster especially if it is urgent. It is important to post your request in the Hire a Pro category, as forum members are not allowed to advertise their services (even offer FREE assistance to help) in other categories like here. Once you have posted in the Hire a Pro category, that will allow other members to provide booking links to our calendars for a free consultation and video assistance (including screen share).
Hope this helps! Let me know if there are any further questions or issues.