Does SPO support bulk edit?

Yes! In Feb 2020, we've launched bulk edit product link previews for Facebook. The feature is only available to paid users since it will increase our server loading a lot (300 products will introduce around 44 minutes processing time). 

You can enter SPO => Bulk Edit tab for more details. Currently, the basic plan will support a limited number of products. Please refer to our pricing page for the most updated offers.