I'm using Mizudroid with two SIP accounts: on the first, which supports PUSH notifications (with Firebase Cloud Messaging protocol), I receive incoming calls, and the second is used to place outbound calls. The text on the settings page says that I need to define as primary account the one used for placing calls, but if I do that the other account no longer detects the PUSH wakeup signals from the SIP server. Is there a way out of this conflict?

To resolve the conflict, try setting the account with PUSH notifications as the primary one. Then, explore MizuDroid's settings for any options related to maintaining PUSH functionality for the second account.