Language changes to Dutch when I try to report a place

Thanks for visiting the Apple Support Communities Jennifer S.,

Based on the information you provided, it sounds like overall, macOS has English set as its default language, which is a good starting point. It is possible that the Maps app itself may have a different language selected. To find out if this is the case, and change it if so, use the steps below. They're from the Apple Support article Change the language your Mac uses - Apple Support, which provides guidance on adjusting language preferences in macOS:

Choose the language you use for individual apps

1. On your Mac, choose Apple menu  > System Settings, click General  in the sidebar, then click Language & Region on the right. (You may need to scroll down.)

2. Go to Applications, then do any of the following:

• Choose a language for an app: Click the Add button , choose an app and a language from the pop-up menus, then click Add.

• Change the language for an app in the list: Select the app, then choose a new language from the pop-up menu.

• Remove an app from the list: Select the app, then click the Remove button . The app uses the default language again.

If the app is open, you may need to close and then reopen it to see the change.

Should the issue continue after that, please don't hesitate to reach back out.

Have a lovely day!