about acount limit

[Waterenjoyer]

hallo i have a qeustion i play pro now for a couple weeks my brother also played pro he had 2 acounts and i have 2 acounts i made sure his acounts are connected to his email and myn to my email can i now make 2 more acount for my self because my brother dont want to play the game anymore and he would delete his acounts if he could but there was no option for it so can i now safely make 2 more acount or do i first need to delete my brothers acounts

my brothers acounts are 

Goatbowy 
Goatbowy0252

 

from this moment they wont be logged on anymore and if there is someting yall can do you are allowed to delete does acounts thanks in advance