Gallery images not syncing across devices

[Easty]

My Note 10 plus 5g and Tab S6 are both signed into my samsung account , settings all the same , just backed both devices up yet a load of albums on my Note 10 aren't showing on my Tab S6 ? 

I've plenty of storage , both devices are running upto date software and latest security settings. 

It shows the same number of photos on both devices yet albums are still missing ?

[Easty]

So when I look in albums it seems the photos I had motion photo enabled on my Note 10 plus and this isn't a feature on Tab S6 so how come it doesn't just convert them to still photos ? Can I convert the albums images to still photos ? There must a solution / workaround for this ?