We confirm this as an issue with version 2.0.12. We have already started working on this and will be fixed in our upcoming release. If you don’t want to wait this much, you may be interested to download the patch of this bug with the following URL:
Please download and extact the zip file.
Copy and Replace all the files/folder with the one you have at your Server (WP-CONTENT >> PLUGINS >> Pie-Register)
It is not recommended that you directly apply this patch on your Live/Production Website, please use it on Test Site First.
Always make a backup of your existence files and DB before you apply any patches.
Hope it helps!