What this app stores
Short version: what you give it, nothing about you that you did not give it, and nothing sent to anyone else.
Your account
The username you choose, a password fingerprint if you set one (scrypt hash: the password itself is never stored), your Telegram user id if you log in with Telegram or link it, and the character names you add (checked on the official AION 2 site: class, level, CP, item level, legion).
No email, no phone number, no IP address.
Uploaded fights
If you use the uploader, the fights of your own characters as A2Tools saved them: your damage, skills and buffs, and the party as A2Tools shows it (other players' names masked, their class, CP and level). Fights of other characters are refused.
They stay on the legion's private server, never on this public app. Before using the uploader you accept its terms: we keep a record that you did (your account, when, which version of the text).
Cookies and logs
One technical cookie that keeps you logged in for 30 days. No tracking, no analytics, no third-party content: even the fonts come from this site.
Requests are not recorded.
Delete
Ask an officer: they can delete your uploaded fights or your whole account.