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Avatar of jpr1

I am a premium member, and have enjoyed chess mentor greatly.  Under the listings of benefits for premium members, it says I can have up to 5 chess mentor lessons per day.  I have used 14 over the last 10 months or so, and now, it will not give me a new lesson.  It keeps on going back to lessons I've already done, asking me if I would like to review this lesson.  What's going on?  Is there a mistake with the system? Thanks very much