Use an iPhone 4 and used to be able to use the Marriott Mobile App with no problems (though it was a bit clunky in its design). Now, however, when I try to open the app, it tells me to upgrade, however, because it now requires an iOS 8.0 or above platform, none of the millions of people who still use iPhone 4's (like myself) can upgrade to it--and the old app is also completely inaccessible. Can anybody--either inside of Marriott's tech support group or in the Insider Community--help me? Just checked into a Marriott property in Shanghai today and am totally shut out from the app. Thanks for your insights, ideas, and/or help!