Handheld devices will need to be running 64-bit to continue accessing many of Strava's features. Devices that are 32-bit are no longer supported and some features may either not be accessible or not work as designed.
Outdated Devices Include:
• on iOS that means iPhone 5c or earlier, first gen iPad Mini, iPod Touch 5th Generation or earlier, iPad 4th gen or earlier
• on Android you can determine if your device is 32-bit (https://www.howtogeek.com/253461/how-to-find-out-if-your-device-is-running-32-bit-or-64-bit-android/)
Moving forward you will need to access these features through the website either on the device or using a computer. You can log in directly on your phone's browser here: www.strava.com/login