My 235 is no longer reading my heart rate during or after a run. I’ve had the same issue others posted about the same heart rate during the majority of a long run. I know it’s not the most accurate and sometimes screws up, but some is better than none. Never had this problem before. Don’t want to do a hard reset yet, so thought I’d ask here for a potential fix before I do that. Had the watch for about 18 months.