Browser 'Microsoft Edge' does not display complete settings list

Question

After I entered the system and tried to open browser 'Microsoft Edge', it appeared that it does not display complete settings list for my start page. I'm using OS Windows 10 (latest version), and I have not done any changes to my system configuration. Previously I could configure my browser start page with full flexibility the browser provided and add new website shortcuts. And now I can only choose what number of rows (1 or 2) for websites icons, and what layout to apply. Moreover, from now on each time I try to create new tab (with start page initially), it loads 10-25 seconds. Though, I have a good Internet connection speed, and previously I had no problems at all. Also, I tried to clear cookie-files for 3-4 weeks, but it did not help either. Please, can somebody share some advice or help to restore this start page settings list & point source of the problem with long page loads.

How start page (+settings) looks now:

How start page (+settings) looked previously: