You can definitely send multiple photos at once to your Luvlink Connected Frame through the Frameo app, and there are two ways that you can do this.
1. Tap and Hold
On the Frameo app, tap and hold on a photo and a small checkmark will appear to indicate that this has been selected. Continue selecting more photos by tapping on others that you wish to send to your frame.
2. Multi Upload Button
On the Frameo app, look for the button right above the camera icon and tap on it. This will also bring out the checkmarks for you to select multiple photos at once.
3. Need to Send More Photos?
If you wish to transfer even larger amounts of photos at the same time, you can use the frame's import feature via a micro SD card.
You can find the full guide to importing photos using an SD card in this article: How to Import Photos From an SD Card