File activation request fulfilled, now a question

I asked for assistance with a file that was mistakenly excluded from the collection, and that was fixed by Matt Hayward on Dec 17. Oddly, since the file was activated in my portfolio I have not had one sale. I don't sell a lot, but I've pretty much sold one or two things a week this past year. Now I have no sales at all. I understand this may just be a slow period, but because of the correlation between the file being added and my sales disappearing at that point for a month, is there any way to check that everything is working as it should be working? Or is everyone experiencing poor sales due to holidays or whatever? I'm okay with riding out a bad spell, but would like to confirm that there isn't something technically screwy going on here.