When a user gets to the page saying "Hmm, not sure you're in the right place." It is either 1 of 2 reasons.
General Suggestions
Add the ability to upload multiple files at once, preferably with drag and drop functionality
Add notification ability to webinars
Course Pages
Ability to change the "click here to register" text in the offering summary of a course - perhaps based on the registration type field on an offering
Additional / custom scholarships for courses
Using your local instance of phpMyAdmin you can add remote databases by modifying the config.inc.php file.
This file should be in the phpMyAdmin folder wherever it is installed on your computer. For me it is located at C:\wamp64\apps\phpmyadmin5.1.1.
Some steps you can try to debug logging into PhotoShelter.
WIP stands for Work In Progress
WIP Adding a New Master Account Member
***Note: You do need to generate invoices for sub accounts after they have been created.