You want to make sure this setting is enabled..... Tools > Options > Content : Fonts & Colors > Advanced: [X] "Allow pages to choose their own fonts, instead of my selections above.
You didn't really say what your device is and what browser you are using, but the fool-proof way to fix this is to download Google Chrome and use that as your web browser.
Thanks for your response. I checked the settings and the option was already enabled. I disabled and then enabled it to see the difference. It changed the fonts but the characters remained the same. With internet explorer your site is shown correctly.
Nothing changed. Not sure if it's just me or if other members are also affected. If you need some more input from my side to replicate the behaviour let me know.
Ok, I just changed something pretty major so I want to know if you are still seeing the problem on your end.