I get this error i use php 7.0 i can use only with php 5.6 ?

Fatal error: The file /home/domenhosting/public _html/Modules/Core.php was encoded by the ionCube Encoder for PHP 5.6 and cannot run under PHP 7.1 or later. Please ask the provider of the script to provide a version encoded with the ionCube Encoder for PHP 7.1. in Unknown on line

After first failed installation when i tried again i get this:

Error: Billic needs to have write permissions to it's own folder and files

And its new account

Hello,

Please set the permissions to 777 or 755

If you still get the error you have the wrong ownership of the files

Regards,

Adam