A week ago, I installed Republic Anywhere from Google Play Store after installing 4 APKs said to permit non-Amazon Android apps to be installed and run on the Kindle.
Anywhere doesn’t show contact names for conversations on the Kindle Fire. Around the same time, it also stopped showing them on my PC. It just shows the phone numbers.
However, Anywhere still shows contact names on my phone.
Phone: Samsung Galaxy s7 Edge
Republic plan: My Choice + 1GB
PC: HP dv7t-7000
OS: Windows 10
Kindle tablet: Fire 8 HD