If you have a problem with your IOI account, please first visit the IOI FAQ at https://ioisupport.zendesk.com/hc/en-us/categories/360003393118-IOI-Account as it may help with your enquiry.
If you cannot find the answer to your questions or if you have trouble logging in, please contact the IOI support teams by clicking on "Submit a request" at the top-right corner of the screen from the link above.
Please note that the Square Enix customer support has no access to your account data.