Xfinity Mobile

I have Xfinity Mobile have had it for years, I upgraded my plan to Mobile plus premium and I added a phone line for my hubby recently, at first the my number was not showing the mobile boost, but then all of sudden it showed up. We had new line & modem installed yesterday, afterwards everything worked as it should, BUT now today after the technicians came out and buried the new line (service off briefly) only my line is showing the Xfinity Mobile Boost, his new line is not and I am not able to download the Call Guard app for his phone it says temporarily unavailable, we have turned his wiFi on and off 3 times, waited an hour but nothing the Xfinity App is still not showing his phone line on Mobile Boost and it should be, if you  look under mobile plan and features it shows it as a feature for his phone line, it's just not working!