I don't think I have been blocked by someone but two years ago I blocked some troll who I will not mention by name, messaged me with some horrible stuff. They seem to be banned
Posted 3 hours ago. Date: 4/1/2020 ; aka April Fool's day
This seems suspicious...
If this is not a joke, then do what you want, nobody can stop you if you change your username. If this is a joke, then you definitely fooled some people here...