Firstly I would like to thank Kuranchi for helping me with this shit because I changed my in game name using Blizzard's service.
As a result, DKP tracking is affect, guild site account is affected. It sucks!
Okay anyways after several fixes here are some outstanding problems I have:
T4/T5 Dkp still attributed to Aopiaolachre instead of Abalachre
After change of account name (to Abalachre, thanks Kuranchi, again) I lost privileges to view guild forums.
Thank you!