To support Google Play login and 64bit games for Octopus, you need to install this plugin.
Install this alone without Octopus won't work.

Do not uninstall this or you need to reinstall it to maintain its core function.

If Google Play login works abnormally, please click retry on the Google Play Support page in Octopus.

From version Octopus Plugin 4.4.7:

Please install octopus first.

All versions
August 15, 2019