Exported OTF from PS can't be read in Windows or Unity

I have created a custom font and saved it out in OTF format. When I preview this in Windows
it will not show. Also, despite being an OTF I can’t use this in Unity. What am I doing wrong or how can I export a usable file?

Ben

Hello Ben and welcome to this forum.

I hope that will help you:

Greetings,
– j.