I think I've solved the problem.Your file naming and folder structure is fine.I discovered what the problem was by loading in the 'German Bundesliga' dummy folders and files and scraping them, seasons 12-13 to 15-16 all loaded fine but the ones before didn't scrape. Looking at the database I noticed the seasons that were scraped had round numbers inserted, I tested this by changing a round number in 11-12 and scraping, it worked fine.So the solution is to add round numbers, but this seems bugged as I haven't been able to scrape games that have taken place on the same date or that occur in the same round.Hopefully this shows the problem I'm encountering.