All suspended items, be it a product, service or a category, continue to remain in the system's database and is hidden from active items. If you need to recall the item, you simply have to reactivate it.

To reactivate a suspended category:

Step 1: Go to the Products tab and select Categories.
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Step 2: The Categories list will appear. Tap Filter and then Suspended, then Apply.
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Step 3: Select the Category and change the status from Suspended to Active and click Save.