It many cases having monotonic id may be quite convenient e.g. for primary keys, ordering. So if you don’t need creation time you may just relay on sorting by id. Checksum is useful if those ids are used by users and they copy paste them, or create tickets for a support based on...
For many fonts, the selection is grayed out on the only available character set — Latin. The Latin character set is used in English and European languages. You may also see an option for "Latin Extended" — only choose this if your language includes accented letters. After you've made yo...