Comment by simne

For technical issues, I know at least one real case: my friend registered domain and created hosting, as private person, and choose automatic recurrent payment from his credit card. All where ok for more than year.

Once, when should made another automatic payment, happens some technical error, so payment transaction where not successful, and provider immediately removed domain and site, so site disappear and domain becomes non-registered and open to anybody.

Fortunately, site/domain where not very important for him, so in a few days he discovered this, and registered same domain on other registar and recreated site from outdated backups.

As I know, many domain registars now offer special service, it named differently, but idea is the same - for very small additional cost (or even free), when domain registration end, it switched to locked for 30 days or something similar, when nobody else could buy domain and reregister it for themselves, so you will have time to fix issues if they happen. Other registars could in such cases call you to all your contacts, and don't turn off domain for a week or more, so similarly, you have time to make payment or to fix technical issues.