So I started my payed plan in October 16th, the 2GB plan. A couple of months later I upgraded my plan to 6GB because I needed more space. As I had understood, my plan would continue until October as a 6GB plan, and then two more months after that, so it would complete 1 year after the day I payed for 6GB plan. So, last May 12th my plan ended and got downgraded to the free plan. So I thought it was a year, went an check what happened, and I found that my 6GB plan had ended (confirmed here in the site, the 6GB plan ended). I went and searched for the invoices, and in my email and in Zotero only the initial October invoice is there, no November 6GB plan invoice. But my expired plan is the 6GB, and I am using 3286.6 MB currently, so I had to have had the 6GB plan.

What am I missing here? I've sent a email to Zotero and the mother company and no answers, and I'm finishing my masters and I can't use my ipad for reading my current stuff, I have to do that on my computer only.