[atlas] Error on multi-probe measurement creation

Starting on Jan 6th, I started getting this error when creating new measurements. "Your selection of probes contains at least one probe that is unavailable. Error 104." These measurements had been running with no issues for the last year. I tried checking through the API that all probe's status' are Connected and are Public but it doesn't seem to make a difference. I am specifying a list of specific probes to be used which is needed for the specific experiment. Small number of probes like 1, 2, or 3 usually work. Larger numbers like 10 - 75, work occasionally. 300 - 400 probes per measurement never seem to work. Appreciate any help. Matt