This question is always asked as below:
"How to convert multiple songs at a time? It always stops converting at some point."
Actually, we have 3 methods to fix it."
#1 Please make sure that you are using the latest version of TuneFab Apple Music Converter and iTunes.
#2 Please try to convert less number of songs at a time. For example, you can convert 10 or 20 songs at once. Sometimes, too many songs (for example, 100 songs) may be cumbersome. Also, please make sure that all of your Apple Music songs have been downloaded and saved on your computer (but not your iOS device). Otherwise, the program would fail to convert them.
#3 Please make sure that your iTunes is working fine during the conversion and not be disrupted by pop-up error or pop-up message.