First, Welcome to Hive.
Are you using Chrome or a different browser to try and change your settings? The old version of Edge and IE sometimes have problems with Hive. Next, are you trying to change the settings on hive.blog or peakd.com? These are the two most popular Hive front ends. If one is causing you problems try using the other one to change your settings.
RE: HELP! Advice needed for a newcomer.