Sync Filemaker go iPhone with FileMaker Pro Advanced iMac, how

[Scrimshaw]

For many years I have been using FileMaker go on my iPhone and I have developed an item where I keep track of all my spending. I have the master of this on my iMac in FileMaker Pro Advanced 16. From time to time I connect to the iMac and using iTunes update. if any basic changes to the programme I have developed are required I make them on the iMac and then save that to my filmmaker Go. I don't seem to be able to do that now and would appreciate guidance on how to sync the two.  thanks