Entire web showing 403 error, Forbidden

first website content disappeared, and website started to show error 403 forbidden ,so i decided to upload a jpa file (akeeba backup). i used FTP ,i faced no issues ,but i can not extract it regarding the same error 403 i deleted them !!

then i tried to use (Re-install Default Scripts Directory) from form mail !! also no success

and tried to call hosting support twice they put on hold till my credit finishes !! is there any solution for me

thanks in advance