SiteLock issues

Hello,

I’ve noticed some issues on my website when the SiteLock is enabled in my cPanel. There’s some sudden changes in design whenever it’s enabled. Everything gets back to normal once it’s disabled. My theme developer seems to struggle finding out what might be the reason. The hosting provider doesn’t have any ideas either. Any thoughts? There’s no new plugins installed by the way – the problem started occurring suddenly.

Thank you

The page I need help with: [log in to see the link]