Toastmasters International, as the name suggests, is an international organisation, present in over 140 countries. Official materials are available in several languages. But like many other organisations, it started its life as an English-only group and the requirements of speakers of other languages weren't on its radar.

Some background

When websites first came on the scene, the same approach tended to apply there. It was assumed that everyone was going to build websites, and send emails, in English.

Because English doesn't use letters with accent marks, it's possible to use a very basic set of characters. But this meant that other languages weren't able to be displayed properly, if at all.