Unless neither of you is on tests-passed then more than a plugin version will differ.
What’s the specific issue which leads you to think you need to downgrade? Different version numbers aren’t necessarily the problem.
If it’s the issue described here then please don’t create duplicates. Work through the problem as it is until you’ve been able to identify a root cause. You were asked certain questions in that topic which you haven’t responded to.
It’s possible that there is an issue with the plugin, only by working through the problem to identify the cause can we raise bugs with plugin developers and resolve it for everyone.
Remember, correlation and causation aren’t the same thing.