Like i thought, it is not compatible per supports response.
Dear Ronnie Eloriaga,
Thank you for contacting us.
We extend our sincere apologies for any inconvenience you have experienced. Please be advised that most Anker QC 3.0 chargers are compatible with the PowerWave 7.5 Stand, but we feel sorry that the 31.5W Dual USB Wall Charger PowerPort+2 is not compatible.
Hope that helps and do not hesitate to email us if you have any other inquiry.