I guess the harsh truth about the state of technology today - is that we are all the guinea pigs in the competitive world of "mobile applications".
There are very, very few that are 100% functional, across all platforms, 100% of the time. Just as in my case- prior to the last update on this phone ( which is automatic and no option to opt out of the up-date ) it worked perfectly. But, someone at Samsung did not test on Macs for full compatibility - or at least not with enough variables such as different OS versions, etc….
So, that is why I am as much of a Luddite as I can afford to be. Fewer programs = better reliability.