From the T&C's...
YOU MUST BE AT LEAST 13 YEARS OF AGE TO USE THIS SITE AND BY USING THIS SITE, YOU REPRESENT, ACKNOWLEDGE AND AGREE THAT YOU ARE AT LEAST 13 YEARS OF AGE.
...And saying he has no right to ask for gifts is ludicrous. He has every right to do it as long as it is not to the point of harrassment. It's up to the person whether they want to gift him or not. Lastly if he is in fact an older person trying to represent a child, while that does break the T&C's, it would be next to impossible to prove.
So there's not much to be done except let him be until it becomes harrassment and then report it to wgt support.