Don't click the tag, click here: "Catalog of over 3,000 3D-printed products for scale modelers."
Open the catalog, choose a subject, e.g. "1/350 scale US Navy Battleships", go to that catalog page, then choose the plans you want from those listed. Add the plans to your cart as though they were models, then checkout normally. You will be sent links by email to download the drawings at no cost to you.
The plans are distrubuted throughout the catalog by subject. There is no single page with all of the plans.
Hope this helps and thanks for your persistence!