html export in Check off_3.8 not working correctly

The html export for Check off_3.8 is not working as it should, it generates nonsense entries if the text contains letters other than letters from the lower ASCII code. That means, in other words, you can only use the program for text written in modern English. No old English, (with Þ, þ, ð), no French, no German, no Scandinavian with Þ, þ, ð, ý, etc. ... Very bad. I enclose a screenshot so you can see for yourself.

If you can't fix it, I suggest you write clear and unmistakably on the download page that this program is old fashioned and ONLY works with English.

Best regards,

Þd.