Loop 3.8.1
iOS 15.8.5
New build using browser, new install.
Same build works in English on iPhone XR and iPhone SE
Location settings correct in iPhone (Canada English)
When Loop is started it runs in German.
The goal was just to have an experimental Loop running with simulators on the old phone to get used to it.
I tried a full system reset / erase on the phone then a reinstall of Loop. Still in German.