Ask your host to give you the correct path to the PHP 5.6 CLI executable for use with CRON jobs. If you decide to uninstall Akeeba Backup 5 and install Akeeba Backup 4.7.2 (the last PHP 5.3 compatible release) you will receive no support at all from us and also miss out on all the new features and any bug fixes we introduce in our software. It's far easier asking your host to give you the path to the PHP 5.6 CLI executable and use in your CRON jobs. As a bonus your backup will be far faster too!
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!