Hi wailoong
As I can see that highlighted text has 'Muli' font family now, could you tell me which font you want it should be?
wailoong It seems to be cache issue, could you try to clear browser cache again?
As I can see the text looks the same as our demo site now.
And I recommend you to upgrade the PHP version to at least 7.2, your site is using old version now.
wailoong
You can change it via the Palettes of the mainnav section in Layouts Settings of template