Yep. I’m using a Samsung S21 w/ Android 11.
Open the VivoKey app, scan the *Spark 2, it lets me in. Scan the QR code, it’ll prompt me to scan again. In the video there are two vibrations, but the same thing happens if I accidentally scan twice or not. Just keeps opening the page indefinitely, have to exit the VivoKey app completely to get it to do anything else.