Hi Joshua Yong ,
 

Yes, there were technical difficulties with our platform that is affecting the load times on the site as of yesterday. It appears to be fixed already.
 

Kindly perform the below and try again

Clear browser history/cache

Try from a different browser (i.e Firefox)

Also, attempt via safe mode/incognito mode
Restart your PC
Try from another source of  Internet Connection

Hope this helps!