If you didn't keep records of your DL/UL values before downloading these two torrents, it's really hard to diagnose the issue.
The 15GB torrent has a 2 ratio, so it's double the bandwidth, meanwhile the 1,5GB torrent has a 44 ratio. That totals to nearly 95GB of uploaded data.
If the uploaded quota didn't register, neither should the downloaded. If you downloaded both torrents directly from their pages using the download button, then you will have to gather all this information that we are discussing and create a helpdesk support ticket to try and have it fixed.
More likely you have used torrent files with a tracker belonging to someone else's account, meaning all the downloaded/uploaded quota were deducted/added to another member.