I am trying to use the Logitech K380 keyboard with an iPhone 6S running the latest software. So far, most of the keyboard commands I have experimented with work just fine, but on Safari I am not able to use the single-letter commands. for example, when Quick Nav is enabled, pressing H should jump by headings, letter L should go to the next link, etc. The issue is not limited to one website. I have only one IOS device to work with. Any suggestions you may be able to offer would be appreciated.