Sharing what i have for Vertical screen vids dont see much out there. thru L-Connect 3 just hit custom theme then
from-main-klickpin-cf-video-pinterest-5gi2ljwuv-1.mp4
from-main-klickpin-cf-pinterest-video-3h08n7lp1.mp4
from-main-klickpin-cf-video-pinterest-422gwghfq.mp4
from-main-klickpin-cf-video-pinterest-5wc0rj5mp.mp4
from-main-klickpin-cf-video-pinterest-5gi2ljwuv.mp4
from-main-klickpin-cf-pinterest-video-2j8z5veuw.mp4
from-main-klickpin-cf-video-pinterest-5gi2ljwuv.mp4
ADD and 2nd option Upload Animations(Auto Fill) choose that and you should be good