It loads quite fast on my browser at home.
But it might be the shopoe.net/app.js
I’ve ran your site through gtmetrix which is a speed testing service.
https://gtmetrix.com/reports/estore.novita.com.sg/SS6czsTQ
That 500 error you are seeing is definitely the cause for the slowness.
And what’s worse is it is blocking the page from rendering. I’m not entirely sure what that app does, but you can consider 3 options:
- consider removing it
- just waiting until they fix it
- depending on the nature of the app, you can load it asynchronously
Let me know if I can help further.
Cheers,
Gab