More than 80% of my images are ALWAYS unconnected in the RealityScan app. What am I doing wrong?

Every scans I do more than 80% of my images are ALWAYS unconnected in the RealityScan app. I can’t get a full scan to works. What am I doing wrong?

Here’s a screen recording of my unconnected pictures because the forum doesn’t let me upload it here : https://drive.google.com/file/d/1IA8BI8yDmkA6yT0TF0n_LRsLfEIHMQQC/view?usp=drive_link