could not activate after erase data from icloud

I erase all date from Icoud was lost my iphone 5, after i found it back , i would like to activate back, But could not successful, There is a massage say" your iphone could not be activate becaue the activate server is temporarily un avaliable. Try connecting your iphone to ITunes to activate it. or try a couple of minutes."

I have try to connect ITunes on my mac and pc, also the same issue.

Please Help!!!! 😢