Amazon finally figured me out and switched to a Spanish interface.
We both breathed a sigh of relief.
P.S. If anybody is in the mood to ask why I didn’t change it to Spanish myself, here’s the thing. The reason why I publish so annoyingly much while cooking three meals a day from scratch, reading several books a week, and spending tons of time with my kid is that I don’t do any non-essential stuff or retain any non-essential information.