How do I upgrade to the Pro version?

From Amen Wiki

Control Panel: GENERAL > Modify

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To upgrade / downgrade your Website Creator, just log in to your Customer Area and follow these steps:

1. Click on at the top of your Customer Area
2. Click on the pack you want to modify the antivirus / antispam option for from the package selection screen:
   
   
   
   
3. Click on the Modify icon on the PACK MANAGEMENT section:
   
   
   
   
4. By default, you will get the package description with its current settings:
   
   
5. Select the Pro antivirus / antispam by clickin on Yes:
   
   
   
   
6. Click on to proceed to the payment section