If you know the email that is currently linked to your Gaea account you can reset your password using the following link:
https://mobilegame.gaeamobile.com/user/forget
If you are still unable to reset the password to your account please send in a ticket with the following information at your earliest convenience. This will help us locate your account, verify account ownership, and help you to regain access.
1) Player Name and Realm
2) Current email address linked with the account
3) Last (2) Purchase Dates or Last (2) Items Purchased
4) Join Date (approximate is OK)
5) Last played date (approximate is OK)
You can find you purchase history here:
If you have an Apple device: https://support.apple.com/en-ca/HT204088
If you have an Android device: https://support.google.com/store/answer/6160235?hl=en&rd=2