I experienced the same problem and the workaround was to select English from the Default Language dropdown menu (after performing a search). I switched to another instance anyway.

Custom domain + SimpleLogin which generates a random alias (Tip: you can have emails forwarded to multiple “real” email addresses) + fake names and other personal info

You can also use your own Google account in Aurora store.

+1 for LibreWolf. I’ve been using it for ~2 years and it’s better than Firefox from a privacy perspective. Development is active, so updates are being pushed regularly. As for vertical tabs, you can easily achieve it with Tree Style Tabs. I strongly recommend it.