I think I have called customer service/technical support.
Some sites have an place to change your personal profile.

Thank you. I have been there but I don't know my current password. I tried the one I thought was it & it was invalid. Now I have a mess there. I am wondering if I should just invalid my account & start over.

Just found out I've got a vitiminB12 shortage .
Now have to take another tablet a day

If you go into settings it gives you an option to change where you are from. Go to the 3 grey lines in top right and click on settings. There you can change it.