MacOS High Sierra To iOS 13 Sync Problem - Updating MacOS not an option
I am running on Mac OS High Sierra 10.13.6 on iTunes 12.8.3.1 and on iOS 13.2.3 and I used to be able to sync my iPhone easily to iTunes. Lately, I have not be able to anymore. Updating my Mac OS in not an option for me because of the compatibility of my paid softwares. "do you want to allow this computer to access information on iphone" keeps popping up repeatedly and the "Trust this device" does not pop up on my phone. Any help to resolve this would be greatly appreciated. Thank you
MacBook Air 13″, macOS 10.13