You can delete forum members in Dashboard > Users or in Dashboard > Forums > Member admin pages.

Delete Post:

I have wpForo 1.0.2. I cannot find delete button that you showed me with an arrow. If you have time, please let me know how to delete members and the posted messages in my blog. Thanks!

post delete in my forum dont work

how can too Make it

You have jQuery error on front-end:

It seems you've uploaded a new XML language in Forums > Settings admin page. And there are syntax error in the XML file so wpForo Language object is not initiated properly. I'd recommend navigate in Dashboard  to Forums > Settings page and change Language to English. You forum will stay in Persian, because wpForo uses .PO and .MO files. I know you have Persian translation files.

If it doesn't help, we have to delete all Persian rows from _wpforo_phrases table.