Here's my set-up: two Macs, both running masOS X 10.13.4 (High Sierra), both syncing a single folder, X, via Apollo Cloud. The purpose here is to keep that folder in sync on both Macs at all times.
What happens is, this results in (at least) _two_ parent folders on both Macs, both containing the synced folder X (and a folder named "Apollo Sync Folder"). One parent folder is named Apollo (the name I gave to my Apollo Cloud 2 Duo), the other is given a suffix "(1)" by Apollo, thus: Apollo(1). Attempts to delete this spurious second parent folder on either Mac are futile: Apollo keeps recreating it, and even further iterations (so, Apollo(1), Apollo(1)(1), Apollo(1)(1)(1) and so one seemingly to infinity.)
I even tried turning off Apollo Sync on both Macs, deleteing the spurious folders (Apollo(1) etc.) and then turning Apollo Sync back on: but sure enough, back came Apollo(1) and all the others.
What do I have to do to get just one synced folder X?