Have purchased the pay pro version. My certificates keep disapearing. Completed a few courses to 100 percent but after a couple of logins the app says that only 90% are completed to that i need to do the certifices again and again. Also the date changes on them each time you take a look on your certificate it shows you the date you made it. Another issue I completed 50 % of the Java course but less than 24 hours later it showed that I havent even started it sayd suddenly 0% completed so that I n