neotheghost on Centos 7. OLS working without any problem...
i think why aapanel strongly suggest people to using centos is because centos has less bug than other's....
that's why some feature didn't even work.... some issue also happen on debian with mailserver,
if aapanel cover all OS perfectly i think that will be bad for the development time, because the dev time will takes longer time to do some update, so i think you can use Centos since the aapanel recomended it.....