Sorry, I am unable to replicate this issue on my localhost test site.
My customize panel is working properly.
Please check the following..
Evolve Plus should be version 2.5.1
Redux Framework plugin should be version 3.5.9
Theme4Press Core plugin should be version 1.3.3
Delete all other plugins from your web server.
Re-install Evolve plus Theme via FTP to see if it fixes your issue.