In case of if anybody have same problem. No solution for arabic fonts if you just import text with arabic lettters. Because encore doesn’t have middleastern language support (photoshop has it). Only solution is prepare your subtitle as fab image script and import it. I have used Subtitle edit software from https://www.nikse.dk/subtitleedit/
and it worked great. You have to uses a windows pc and export as fab image script.
Recently I had the same problem, after a crash I couldn’t open my premire file. Project file was in an external hard drive. I have just restarted the hard drive and it worked.