If I want to temporarily stop selling a particular product due to some issues, and then restore it later, how to go about it?

StoreHippo understands the dynamics of operating an online store. If you don’t want a product to be visible in the store or product is out of stock, but you might want to make it visible later, you can uncheck the Publish field.

Go to Products > Reviews section in StoreHippo Admin Panel. Click on the ellipsis button and choose the Unpublished option from the drop-down menu.

You can also refer to this link:
https://help.storehippo.com/topic/product-reviews