I'm not sure if this is a glitch or not but on both of my upgraded accounts, on my home pages, the Purchased On date is set to 0000-00-00. So now I don't know when I can buy my tickets again. Anything I can do to fix this or is it a glitch?

Bump for yea 

when did you purchase last?

they reset to 0 when ready to repurchase 

Ah. I purchased either last month or early this month. I guess if they have reset to 0, I can buy more. That brings me to ask, if one doesn't use all of their tickets before purchasing a new set, do the leftover ones expire or roll over?

Tickets reset after every 30 days.  When they show as 0000-00-00 that means you are ready to purchase another set from the store. ☺

If not used by that date they expire.

i think they should roll over for up to atleast 6months