To delete a synced on a desktop or laptop:

1. Hover over Things To Do
2. Select Sync/link store registries 
3. Click the 3 dot icon over the store logo
4. Click REMOVE in the drop-down menu to remove those synced items from your MyRegistry.com account.

To delete a synced registry on the mobile app:

1. Select the MENU icon located on the bottom of the panel
2. Scroll down to click Things to do
3. select Sync Store Gift Lists
4. Tap on the store logo
5. Click REMOVE STORE REGISTRY