Going to send you a PM as well in case you miss this post, but for anyone else who comes across this thread with the same question/concern-
You can Edit your Profile to remove your location from displaying publicly (this does NOT affect fillup/service entries).
Regarding locations attached to fill-ups, these are NOT publicly visible. They are only available to you when you go to Edit the entry and to Fuelly Admins. You can confirm this by logging out (or using an incognito window) and viewing your profile.