Tested the menus on:
www.stevedonahue.ca
WordPress version 5.2.1
PHP version 7.2
Plug-ins: Gravity Forms, Slider Revolution
Iphone 6Plus
OS 12.3.1
Current menu is set to Navigational Modal.
So I tested the 4 nav menus. Here is what I found:
Usable - Navigation Collapsed
-will take you to the About page and other top level menu
-works well but takes up the whole mobile screen
-Pay attention to the Setup > Sub-Menu Trigger > Sub Indicator
-The subindicator setup icon was set to 25px to give the responsive screen UI something to aim for. Worked poorly.
Marginal - Navigation Dropdown
-will NOT take you to the About page and other top level menu
-extends past the mobile screen on default setting.
Marginal - Navigation Layered
-will take you to the About page and other top level menu only sometimes
-Pay attention to the Setup > Sub-Menu Trigger > Sub Indicator. This is the same configuration for Nav Collapsed but works 1 out of 20 attempts on my iPhone 6Plus.
Usable - Navigation Modal
-will take you to the About page and other top level menu
-works well but takes up the whole mobile screen
-Pay attention to the Setup > Sub-Menu Trigger > Sub Indicator
-about 1 in 20 attempts to access just the second level page worked on the About page. The subindicator setup icon was set to 25px to give the responsive screen UI something to aim for. No difference if it is 1px or 25px.
Steve