Download 2.2.5 from the
Release Notes page, uninstall 2.3, install 2.2.5.
If you use the Steam version and 2.2.5 isn't available then you will have to link your Steam account to your YYG account in your settings on the YYG website so that the standalone version recognises your licence details when you login.
You may need to confirm the correct runtime is being used after installing 2.2.5 by going to
File > Preferences > Runtime Feeds > Master
and making sure the correct runtime version is installed and being used.
Bonus: No more having to run Steam to use GMS2.