I'm an expert on MobiLink, but a little out of the loop with respect to how MobiLink has been implemented withing the HCP environment. I'll do my best to answer your question.
In order to change the verbosity of the MobiLink Server log, we will need to add a server option to the start line of the MobiLink Server. In order to help debug this issue, we will add a "-vRU+" to the start line of the MobiLink Server. There are examples on how to use the --ev switch for neo.bat at https://help.hana.ondemand.com/help/frameset.htm?ac7e5e6c84214d14a3303dfc2536f0c2.html that can add command line switches to the MobiLink Server start line. Once you add the option, you will need to stop and start the MobiLink Server.
From a previous post, it sounds like you are connected to the remote database using Sybase Central and initiating the synchronization through Sybase Central. I've assume that's by right-clicking on the synchronization profile you've created and selecting "Synchornize". When you do this, set the verbosity to HIGH when you perform the synchornization, and then copy all the lines in the output window and save it to a file. After the synchornization completes, look at MobiLink log and find the latest synchronization that took place, which almost certainly be the one you just initiaited. A synchronization in the MobiLink log can be identified by the number in the greater-than and less-than symbols. For example, "<90>". All the log lines with a "<90>" after the timestamp will be associated with the same synchronization.
Reg