Greyed out items indicate that the item was created on a different device and is not currently available on the current device. This will occur if you’re using a RememBear Free account. With RememBear Free, items are only available on the device where they were originally created. You can continue to use RememBear Free for as long as you want. However, you’ll need RememBear Premium to sync all of your items across multiple devices.
If you’d like access to your items across all of your devices (along with a bunch of other neat features), you’ll need to upgrade to RememBear Premium.