I'm running iOS 13.1.3 on my iPhone XS and running Mac OS 10.14.6 on My iMac Pro and Mac OS 10.15 on a late 2012 iMac 27 core i7. Until this last update I could answer my phone on either Mac through "calls on other devices". Now, since the update only the 2012 iMac will answer calls. Yes, All Macs are on the same wifi network and I've restarted and reset pram. Does anyone have any similar issues or thoughts on how I can get my iMac pro back with the program? I can't update to Catalina yet due to bugs with my main CAD software. I'll update soon.