I can not study more words

Hi everybody!!! The first week i tried the free version and for the 7 free days works correctly but after when I suscribed for a year I can not study more words. I tried but when I play, I still have the same words always played.
Please help!!
Xièxie!!

Hi there,

I see you’ve purchased a subscription, thanks! It looks like you’re likely using the Android app, I recommend restoring the data and possibly using the restore subscription feature as well. Here are a link to two guides:
http://docs.skritter.com/article/54-restore-data
http://docs.skritter.com/article/45-restore-subscription

Hope this helps! If this doesn’t resolve the issue, please email us at team@skritter.com and we can better track down and resolve the problem.