Uninstalling GLongP removes the local encrypted database, your notes and vault files, cached chat media, and the keys held in the system keychain.
In the app: Profile → Delete account. This deletes your server-side data immediately and wipes the device in the same step.
Without the app: email glongptech@gmail.com from any address
with the subject Delete my data and include your account address
(the glp1… string shown in Profile). We remove:
Email requests are completed within 30 days. We may ask you to prove control of the address by sending a message from the app.