Hello Beldean,
PubCoder does not need Android Studio to be installed, since it only requires a subset of the Android SDK.
It seems Google recently broke compatibility of the SDK download page with IE and for this reason the PubCoder guided install procedure didn't work in the last few days... We fixed it and it should be ok now, simply try to install the SDK again from PubCoder and everything should go fine now.
If you don't use it for other things, you can also uninstall Android Studio safely from your PC, reclaiming disk space...
Thanks for the report and have a nice day.
Bye,
Angelo