Ryze decided to do a staged roll-out, which means that some folks get the new app version, everyone else the old version.
I don't know which criteria they chose to determine those who are eligible, there are plenty of options they can choose from in play store. I guess region, and maybe phone model
Delete & reinstall doesn't help much. Either you are in that group, then you get the update automatically. Or you are not in the group, then delete & reinstall doesn't help at all.
So what works for you does not work for most others - unless they have finally started a full rollout