heart rate sensor stopped working on epix 2

Hi. I just got my epix 2 this week and the heart rate monitor stopped working on Thursday morning. I tried turning the sensor on and off, rebooting the watch, and even doing a factory reset, but nothing has seemed to work. The watch is on 8.35. I spoke to support, and submitted the watch log files. But while I'm waiting to hear back, just curious if there are any other suggestions of things that I could try to fix the watch. Thanks.