If you have done one of the following you can upgrade to Baron:

Buy Disciple

Notice:
• All upgrades need to be done rank by rank.
• The cost of upgrading per rank does not change by doing 1 rank or multiple.
• Upgrading does not extend the original purchase duration.
• Buying rank upgrades for an expired rank purchase will not be honored.
• Upgrading gives you the difference between the ranks, keys/amps do not stack.

If you have done one of the following you can upgrade to Count:

• Buy Baron
  
• Upgrade to Baron
  

Notice:
• All upgrades need to be done rank by rank.
• The cost of upgrading per rank does not change by doing 1 rank or multiple.
• Upgrading does not extend the original purchase duration.
• Buying rank upgrades for an expired rank purchase will not be honored.
• Upgrading gives you the difference between the ranks, keys/amps do not stack.

If you have done one of the following you can upgrade to Duke:

• Buy Count
  
• Upgrade to Count
  

Notice:
• All upgrades need to be done rank by rank.
• The cost of upgrading per rank does not change by doing 1 rank or multiple.
• Upgrading does not extend the original purchase duration.
• Buying rank upgrades for an expired rank purchase will not be honored.
• Upgrading gives you the difference between the ranks, keys/amps do not stack.

If you have done one of the following you can upgrade to Archduke:

• Buy Duke
  
• Upgrade to Duke
  

Notice:
• All upgrades need to be done rank by rank.
• The cost of upgrading per rank does not change by doing 1 rank or multiple.
• Upgrading does not extend the original purchase duration.
• Buying rank upgrades for an expired rank purchase will not be honored.
• Upgrading gives you the difference between the ranks, keys/amps do not stack.

If you have done one of the following you can upgrade to Legend:

• Buy Archduke
  
• Upgrade to Archduke
  

Notice:
• All upgrades need to be done rank by rank.
• The cost of upgrading per rank does not change by doing 1 rank or multiple.
• Buying this upgrade for a 2nd+ time will extend the duration of the Legend rank.
• Buying rank upgrades for an expired rank purchase will not be honored.
• Upgrading gives you the difference between the ranks, keys/amps do not stack.