ASRock AB350 Pro Ram Slots

[officialcustompc]

So I have the motherboard in the title, and as you may’ve noticed if you were to google it only one side has those slots that you pull back. So I pull it back, and he ram still won’t fit. It all lines up, DDR4, 2400 MHz, 288 pin. What’s the problem?

 

[vapour]

can you share the ram model id in details?
Also please take a photo of both ram and mb, pls.
Can you explain more on why it doesn't fit? Too long, too short, too large?