Equipment disappeared after changing nick

I changed my nick yesterday and when I joined  aternos server I haven't got my

my eq. I couldn't find it anywhere I  thought it was a server problem or something else.

But today i found another notification at this side (but in Polish and you answered you are helping in English} about the probem like mine. I want to ask  is it possible for me to change my nick back and If l do it( I can do it only once a month) my eq will be back again?