If an old account that has been deleted from XMPP server has push notifications enabled it is impossible to delete account.

To Reproduce

1. Activate push notifications
2. Delete account in server
3. try to delete account in app

Expected behavior Possibility to disable push notifications and delete account.

Details (please complete the following information):

• Siskin Version: 6.4
• iOS version 14.6
• iPhone model iPhone 8