If you bought a license for Gallery Bank Pro https://gallery-bank.tech-banker.com/ then the license key is somehow wired to your domain with the full protocoll like: http://www.test.com.
In case you want to switch to https or drop the www your license becomes invalid.
Cases and no solutions are presented here:
http://tech-banker.com/topic/ssl-addition-disables-gallery-bank-pro/
http://tech-banker.com/topic/gallery-not-showing-only-shortcodes/
Using the full domain with protocol is a very dumb or weird way to validate a license key.
The right thing to do is writing the support of Gallery Bank. They were responsive and asked to get access to my Wordpress to update Gallery Bank. No way!