There appears to have been an attempt to hack into this phpBB instance, which resulted in the old themes getting erased. They have been reloaded, but since the theme IDs in the database are now different, your theme may have been reset to the subSilver or Acid variants. Please go to your user profile and pick another theme if you need to reset your current them.
Forum hacking attempt, you may need to update your theme Page Title Module
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