The changes in WordPress 4.9 caused the custom color picker of CVPro (which added the extra alpha/opacity channel to the default color picker) to be disappeared.
We released the CVPro version 4.9.1 to resolve this compatible issue.
For Active License Owners
Please do update to the latest CVPro version 4.9.1.
For Expired License Owners
Please replace content of the file
color-picker.js in the folder
by content of this file CVP 4.9.1 color picker.
Otherwise, you can renew your license to get latest update which resolved this issue.