My b2evolution Version: Not Entered

:D After i setup everything about sundomain now, i can set subdomain auto from b2evolution can not go to cpanel and when i post text it's ok but if click file or image i can not see dir why?

I think i shall create? folder in host? i see from text dir in Dashboard>Files>Upload "Readl i have idea" i think if i can create subdomain auto from b2evolution it maybe look like tactic for post photo i maybe forget setup something about dir who? or You? maybe help you! Await, i online all time. 8|