As of 0:30 2019-07-13, Health Mate stopped tracking my steps. Google Fit is still tracking steps. According to both apps, they are connected. The problem started before the latest Health Mate update.
I am using Health Mate Version 4.5.2 dated Jul 16, 2019 on a Huawei P20 running Android 9.0 and EMUI 9.0. The latest update says "Google Fit integration is now more advanced". The update did not fix the problem.