Suggestion from non-techie ex-pea

The File Storage page holds information and statistics about your file memory use on your forum. This is broken down into three separate areas, each with their own area and storage limits.

To monitor how much space you're using on the forum, visit the admin area and select Upgrades. On the following page, select File Storage.

Themes - Total Themes shows you the current number of themes you have installed on your forum. Max Per Image is the maximum size that the theme can be. Max Images Per Theme is the total number of custom images you can have built in to a theme. Upgrades to all of these areas are available for an additional cost from the Change Storage button below the Themes heading. The manage button will take you to your themes page in the admin panel.

Plugins - Total Plugins is the number of plugins you have installed on your forum. Keys is the number of keys installed on your forum. Super Keys is the number of super keys installed. Upgrades to all of these areas are available for an additional cost from the Change Storage button below the Plugins heading. The manage button will take you to the plugins page in the admin panel.

Attachments - Attachment plan is the current plan you have for your forum. Max Per Attachment is the maximum size an attachment can be. Max Files Per Post is the number of attachments you can add per a post on the forum. Maximum bandwidth is the amount of downloads that your attachments can receive, measured in megabytes or gigabytes. The manage button will take you to a page where you can view all of the attachments on your forum and delete them if you wish. This page is also accessible via the "Attachments" tab at the top of the File Storage page. This page also contains the toggle to turn attachments on and off on your forum. You also have the ability to change the amount of attachments per a post that a user can upload, and the maximum file size of the attachment. The list contains the name of the attachment, the amount of space that it is currently using, and a link to the post where the attachment is located on the forum. To delete the attachments you can either select the cross to the right of the attachment that you wish to delete, or check the box to the right of the attachment and select Delete Selected Attachments to delete all of the selected attachments.

Each individual area has its own page for purchasing additional space if needed. Upgrades to additional space or bandwidth are separate. For example purchasing additional theme space does not mean you get more plugin space and vice versa.