About DNS resolve domain

Recently,I got a VPS from Vultr, try to building a blog websites for myself,that blog base wordpress,but i'm a rookie haha,never did this before so, This is probably the case:I followed the online tutorial,buy a vps from vultr,and buy a domian from dynadot,and follow the instruction complete setup. But i still can't connect my blog website. enter image description here

i wish someone can help this