After looking at your timeline I have a theory straight away - it's your top images - they need to be 16x9 landscape format with bright colours - yours are not suitable at all.
eg - good:
bad:
After looking at your timeline I have a theory straight away - it's your top images - they need to be 16x9 landscape format with bright colours - yours are not suitable at all.
eg - good:
bad:
good point. I will consider that.