First Nations Unicode Font compatibility

[DavidWikstrom]

This solution works great for most fonts - thank you! - but I am not able to get it to work for the First Nations Unicode Font available here: https://fnel.arts.ubc.ca/resources/font/.

I tried converting to woff using both http://fontconverter.io and https://onlinefontconverter.com, but the text still renders "wrong" - e.g., accentuated characters (combined unicode characters) render a 2 different characters: ə˛ rather than with the ˛ being integrated into of the ə. This character would be Char ( 73100601 ) in Claris FileMaker.

I'm guessing it might just be a woff limitation - do you have any insight or ideas for workarounds?