Adobe Font Adobe Kaiti Std R installed on a wordpress.org site displays random characters wrong

Hi Adobe Community

Hope this is the right forum for Adobe Font support for web.

I'm developing a wordpress.org site mostly in english but with chinese characters for transcriptions. I have installed  Adobe Kaiti Std  which is working swimmingly for most of the text and then it randomly displays one character in a different typeface, like an override  - see high lighted text below screen grab

I thought there might have been hidden word doc junk, so have cut and paste into notepad and check the source code and nothing seems out of place 

I went back to Adobe Fonts to check that the character actully works in the sample text and it's fine - these are common characters

Checked the browser - chrome and firefox - and get the same issue

See error on this page: https://ourchine.managedwp.com.au/red-printed-incense-stick-packaging/

Looking back at  - Adobe Fonts  - project section: Adobe Kaiti Std

- see screen below - it has "All characters" greyed out - is there anyway to get this option switched on? ... and will this fix the issue?

I'd be greatful for any help on this one

Cheers

Kira