Not able to change PHP Version (5.4.45) to 7.x.x

[sam_peter]

I am not able to switch php version to latest with php selector. Tried all necessary thing tried contacting with my vps support provider but no luck.

Details:

Apache version: Apache/2.2.27
PHP version: 5.4.45
MySQL version: 5.6.35

Distro Name: CentOS release 6.8 (Final)
Kernel Version: 2.6.32-642.15.1.el6.x86_64
Platform: x86_64 [xenxen-hvm]

CWP version: 0.9.8.153

Please help me out.

[sam_peter]

Please help someone 

[Administrator]

have you checked output logs for errors ?