I just checked and I cannot edit any old ratings. Maybe it's something you can only do through the app? I can't install the app because I travel between countr

I just checked and I cannot edit any old ratings. Maybe it's something you can only do through the app? I can't install the app because I travel between countries and they block my Google account from installing the local app. I'm sure there's ways around that but I'd rather just use the website.