Hi
I've got similar issues on a DS-PWA96 control panel.
After the upgrade the mobile network appeared offline, even though the network tests were ok. Call and sms notifications stopped working.
I have rolled back to 1.2.9 (via the web browser) and lost all settings so had to re-enroll all devices again. The door sensors and the outdoor sounder were a pain.
After getting everythin back and working something still pushed me to try the upgrade again. So I did the uograde to v1.3.0 and lost again all settings and enrolled devices + issues with the mobile network.
At the point I have decided to "reset" the device via the reset button. No luck, still the mobile network was not working.
As a last attempt i tried to remove all power. Since the panel has an internal battery, i have removed the AC power lead, then opened up the panel and disconnected the battery. Then I have switched the on/off button a few times, waited 5 more minutes and connected the battery and ac lead. After applying the settings for the mobile network (apn, user etc...) lo and behold, the issue was fixed. Of course I had to enroll again all other devices.
So, my suggestion for the ones having issues is, before trying other measures, to leave the control pannel without power for a few minutes (this does require the internal battery to be disconnected).
For the notifications part, these required a reconfiguration of the user. With the old firmware (1.2.9) notifications were set up separately in the communication area of the settings. Now they need to be set up for each user. To be honest it's better like this, but it would have been nice for these changes to be documented.