Thanks for updating in!
I can confirm your issue on my end. It seems it is an Under Construction plugin issue.
It only shows the under construction page on those examples pages when I click the update button in X > Under Construction.
To fix this issue, kindly follow my colleague's advise:
Upon checking, I see that you're still using the old X child theme which could be a potential conflict.
Could you please try downloading the latest child theme from your Themeco Dashboard, install it and move your child theme templates there. Also delete your under construction extension, re-install it again and configure again.
For your convenience, here's the guide on how to setup your child theme:
I validated X product long ago and I usually receive automatic notifications in my dashboard. My X dashboard says everything is updated and I ve just checked (by clicking "check again") and there is nothing to update.
Yes it was already validated. The X dashboard will only show your latest theme version but not your child theme. That also applies if you install Pro theme.
Hope this helps.