Account modification without agreement

Today during my connection I could see that my Skin and especially my username were not good. When I connect to the server where I play, I am well recognized despite my different nickname. I've checked by connecting to minecraft.net, and they are nevertheless assimilated to my account minecraft and my email address. I note that the changes were made on 4/08/19 (but not by me). Especially since I played that day and the changes had not occurred. (different time zone?)

Currently I am logged on to minecraft as "Xpro33m" but my username is "Skyaed". The skin I was able to edit and put mine, but the nickname was changed on 4/09/2019 is unchangeable for another 29 days.