You can delete your account and all data attached to it at any time. There are two ways.
Your account is erased from our servers right away. If you subscribed to Pro, cancel the subscription in Google Play or the App Store as well; deleting the account does not cancel billing.
If you no longer have the app installed, email gulerr.dogukann@gmail.com with the subject “Delete my PingBeacon account”, from the email address you signed in with. If you never signed in, include the account ID shown in the app under Settings. We delete the account within 30 days and reply to confirm.
You don't have to delete your account to remove data: any monitor can be deleted in the app (open the monitor → its settings → Delete monitor), which removes its check history, incidents and scans as well.