Ok, so what happend:
He bought ESET license using his own account, his own email etc... lXXXXXXXl@gmail.com
He received license key and invoice in his own email
He added license into his own Eset Home account
After activation the license says that the owner's email is my email lXXXXXXX9@gmail.com
He no longer can manage the added license because it is somehow mine now... he can not see license key etc...
When I logged into my own account, it show as my license, where I can manage it and see activation key, also it says that key is shared with lXXXXXXXl@gmail.com
What should have happend is :
He bought ESET license using his own account, his own email etc... lXXXXXXXl@gmail.com
He received license key and invoice in his own email
He added license into his own Eset Home account
After activation HE is the owner of the license and HE can manage it...
so there must be some kind of bug, because last time I logged into my account was like few years ago... and why am I owner of the license when I did not buy it ? he used correct email because he received invoice...