Apologies for late response. I tried recreating this scenario at my end and was able to do so in one way. This happens when you reset connections on the Skala Preview MacApp.
I suggest to exit Skala on both your phone and Mac and then reopen and try reconnecting. This is the most basic way to fix this problem. Try this while I try more ways to replicate the problem.
Hope this helps. Have a great day everyone and happy designing.