Plugin not working it create multiple redirect loop

Hello,

Great plugin, it is just what I need, and I am using wordpress with version 4.5.7, after activated it, there is no sites available to select, and please check the screenshot.

https://prntscr.com/fx9v4g

I know Multisite Auth need wordpress 4.7 at least, but for us, there is another project which need php version 5.6.30, so we have to use wordpress 4.5.7 to make both project running.

It would be much great if you can make Multisite Auth compatible with wordpress 4.5.7.

And another point is that it would be great if user can be redirected back to site where try to login after he login, is that possible?

Thanks.

Alex