We actually purged accounts where there was no login made in the past 60 days prior to purge (the requirement as per ToS is to login once every 30 days), but since we purged without suspending first, we allow a grace period where the accounts can be restored if asked within a week from when termination was made for these accounts.
Purge happened early in this month, around the 4th, so basically we're now nearly two weeks after even if one week was said to be our grace period at first.
Your last login prior to the purge was on December 10th, so well past the 60 day mark and even more so past the 30 day requirement.
I would not rely on email as my sole reminder to login in order to keep a service active, I'd also make sure to login a bit more frequently then the requirement just to be safe.
Your account should now be sorted, please let me know if you find anything that isn't working properly.