Have tried everything only to reach the same conclusion on Item #1.
It cannot be done without creating separate categories, then assigning each different levels. All products also require duplication with their appropriate prices and level matching the categories. Fortunately the "cloning" function in the admin makes this duplicating process simple.
Item#2 was solved once separate categories with their own login levels were created in Item #1.
If nothing else, these last 4 days I've learned a lot I about the inner workings of ECT.
Hi for the login page have a look at the parameters listed here where you can set a special page for all or based on login level https://www.ecommercetemplates.com/phphelp/ecommplus/parameters.asp#forward