This reads like a NAT issue. Are you behind a router (or two) ?
Google "nat forward sip"
If this didn't happen before you can go back a version until you've worked out the issues with the new version on your device.
You may also need to discuss NAT and STUN settings with your provider.
In the Android version you can refer to:
SIP Account -> Network Settings> NAT
In Ios you can find similar settings.